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INA
                                                    ®                                                    114
                                                                                                                                                                      INA114
                                                                                            INA
                                                                                               114




                                                      Precision
                                              INSTRUMENTATION AMPLIFIER

             FEATURES                                                                                      DESCRIPTION
             q LOW OFFSET VOLTAGE: 50µV max                                                                The INA114 is a low cost, general purpose instrumen-
             q LOW DRIFT: 0.25µV/°C max                                                                    tation amplifier offering excellent accuracy. Its versa-
                                                                                                           tile 3-op amp design and small size make it ideal for a
             q LOW INPUT BIAS CURRENT: 2nA max
                                                                                                           wide range of applications.
             q HIGH COMMON-MODE REJECTION:
                                                                                                           A single external resistor sets any gain from 1 to 10,000.
               115dB min
                                                                                                           Internal input protection can withstand up to ±40V
             q INPUT OVER-VOLTAGE PROTECTION:                                                              without damage.
               ±40V
                                                                                                           The INA114 is laser trimmed for very low offset voltage
             q WIDE SUPPLY RANGE: ±2.25 to ±18V                                                            (50µV), drift (0.25µV/°C) and high common-mode
             q LOW QUIESCENT CURRENT: 3mA max                                                              rejection (115dB at G = 1000). It operates with power
             q 8-PIN PLASTIC AND SOL-16                                                                    supplies as low as ±2.25V, allowing use in battery
                                                                                                           operated and single 5V supply systems. Quiescent cur-
                                                                                                           rent is 3mA maximum.
             APPLICATIONS                                                                                  The INA114 is available in 8-pin plastic and SOL-16
                                                                                                           surface-mount packages. Both are specified for the
             q BRIDGE AMPLIFIER                                                                            –40°C to +85°C temperature range.
             q THERMOCOUPLE AMPLIFIER
             q RTD SENSOR AMPLIFIER
             q MEDICAL INSTRUMENTATION
             q DATA ACQUISITION
                                                                                                      V+
                                                                                                     7 (13)

                                     –         2    Over-Voltage                                               INA114
                                   VIN                                                                                                     Feedback
                                              (4)    Protection
                                                                                A1
                                                                                                                                          (12)
                                                                                                      25kΩ                 25kΩ
                                               1                                                                                                    DIP Connected
                                                                                     25kΩ                                                              Internally
                                              (2)
                                                                                                                                           6
                                         RG                                                                              A3                           VO
                                                                                                                                          (11)
                                               8                                                                                                                           50kΩ
                                                                                     25kΩ                                                                        G=1+
                                           (15)                                                                                                                             RG
                                                                                                                                           5
                                                                                A2                                                                  Ref
                                     +         3    Over-Voltage                                                                          (10)
                                   VIN                                                                25kΩ                 25kΩ
                                              (5)    Protection

                                                                                                     4 (7)
                                                                                         DIP                       (SOIC)
                                                                                                      V–


          International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
             Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
                                                                                                                                                                                                       ®


             ©1992 Burr-Brown Corporation                                                             1
                                                                                                  PDS-1142D                                                     INA114
                                                                                                                                                              Printed in U.S.A. March, 1998



SBOS014
SPECIFICATIONS
ELECTRICAL
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.

                                                                              INA114BP, BU                                  INA114AP, AU
 PARAMETER                               CONDITIONS                 MIN             TYP            MAX             MIN            TYP            MAX           UNITS
 INPUT
 Offset Voltage, RTI
   Initial                                TA = +25°C                            ±10 + 20/G     ±50 + 100/G                    ±25 + 30/G ±125 + 500/G            µV
     vs Temperature                    TA = TMIN to TMAX                       ±0.1 + 0.5/G    ±0.25 + 5/G                    ±0.25 + 5/G  ±1 + 10/G           µV/°C
     vs Power Supply                  VS = ±2.25V to ±18V                        0.5 + 2/G       3 + 10/G                          T           T                µV/V
   Long-Term Stability                                                         ±0.2 + 0.5/G                                        T                           µV/mo
 Impedance, Differential                                                          1010 || 6                                        T                           Ω || pF
     Common-Mode                                                                  1010 || 6                                        T                           Ω || pF
 Input Common-Mode Range                                             ±11           ±13.5                            T              T                              V
 Safe Input Voltage                                                                                 ±40                                        T                  V
 Common-Mode Rejection               VCM = ±10V, ∆RS = 1kΩ
                                             G=1                      80             96                            75             90                             dB
                                            G = 10                    96            115                            90             106                            dB
                                            G = 100                  110            120                            106            110                            dB
                                           G = 1000                  115            120                            106            110                            dB
 BIAS CURRENT                                                                       ±0.5            ±2                             T              ±5             nA
   vs Temperature                                                                    ±8                                            T                            pA/°C
 OFFSET CURRENT                                                                     ±0.5            ±2                             T              ±5             nA
  vs Temperature                                                                     ±8                                            T                            pA/°C
 NOISE VOLTAGE, RTI                    G = 1000, RS = 0Ω
  f = 10Hz                                                                          15                                             T                           nV/√Hz
  f = 100Hz                                                                         11                                             T                           nV/√Hz
  f = 1kHz                                                                          11                                             T                           nV/√Hz
  fB = 0.1Hz to 10Hz                                                                0.4                                            T                            µVp-p
 Noise Current
  f=10Hz                                                                            0.4                                            T                           pA/√Hz
  f=1kHz                                                                            0.2                                            T                           pA/√Hz
  fB = 0.1Hz to 10Hz                                                                18                                             T                            pAp-p
 GAIN
 Gain Equation                                                                1 + (50kΩ/RG)                                        T                             V/V
 Range of Gain                                                        1                           10000             T                             T              V/V
 Gain Error                                  G=1                                   ±0.01           ±0.05                           T              T               %
                                             G = 10                                ±0.02            ±0.4                           T             ±0.5             %
                                            G = 100                                ±0.05            ±0.5                           T             ±0.7             %
                                            G = 1000                                ±0.5             ±1                            T              ±2              %
 Gain vs Temperature                         G=1                                     ±2             ±10                            T             ±10           ppm/°C
  50kΩ Resistance(1)                                                                ±25            ±100                            T              T            ppm/°C
 Nonlinearity                                G=1                                  ±0.0001         ±0.001                           T            ±0.002        % of FSR
                                             G = 10                               ±0.0005         ±0.002                           T            ±0.004        % of FSR
                                            G = 100                               ±0.0005         ±0.002                           T            ±0.004        % of FSR
                                            G = 1000                              ±0.002           ±0.01                           T            ±0.02         % of FSR
 OUTPUT
 Voltage                             IO = 5mA, TMIN to TMAX         ±13.5          ±13.7                            T              T                              V
                                     VS = ±11.4V, RL = 2kΩ           ±10           ±10.5                            T              T                              V
                                     VS = ±2.25V, RL = 2kΩ            ±1            ±1.5                            T              T                              V
 Load Capacitance Stability                                                        1000                                            T                             pF
 Short Circuit Current                                                            +20/–15                                          T                             mA
 FREQUENCY RESPONSE
 Bandwidth, –3dB                             G=1                                     1                                             T                             MHz
                                            G = 10                                 100                                             T                             kHz
                                            G = 100                                 10                                             T                             kHz
                                           G = 1000                                  1                                             T                             kHz
 Slew Rate                             VO = ±10V, G = 10             0.3            0.6                             T              T                             V/µs
 Settling Time,    0.01%                     G=1                                    18                                             T                              µs
                                            G = 10                                  20                                             T                              µs
                                            G = 100                                120                                             T                              µs
                                           G = 1000                                1100                                            T                              µs
 Overload Recovery                      50% Overdrive                               20                                             T                              µs
 POWER SUPPLY
 Voltage Range                                                      ±2.25           ±15             ±18             T              T               T              V
 Current                                     VIN = 0V                               ±2.2            ±3                             T               T             mA
 TEMPERATURE RANGE
 Specification                                                       –40                             85             T                              T             °C
 Operating                                                           –40                            125             T                              T             °C
 θJA                                                                                 80                                            T                            °C/W

T Specification same as INA114BP/BU.
NOTE: (1) Temperature coefficient of the “50kΩ” term in the gain equation.



The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.


                  ®


                      INA114                                                         2
PIN CONFIGURATIONS                                                                                                        ELECTROSTATIC
                          P Package                                8-Pin DIP                                              DISCHARGE SENSITIVITY
                                               Top View
                                                                                                              This integrated circuit can be damaged by ESD. Burr-Brown
                            RG         1                              8       RG                              recommends that all integrated circuits be handled with ap-
                          V–IN         2                              7       V+
                                                                                                              propriate precautions. Failure to observe proper handling and
                                                                                                              installation procedures can cause damage.
                            +
                          V   IN       3                              6       VO
                                                                                                              ESD damage can range from subtle performance degradation
                            V–         4                              5       Ref
                                                                                                              to complete device failure. Precision integrated circuits may
                                                                                                              be more susceptible to damage because very small parametric
                      U Package                        SOL-16 Surface-Mount                                   changes could cause the device not to meet its published
                                               Top View                                                       specifications.
                        NC         1                                      16 NC
                                                                                                              PACKAGE/ORDERING INFORMATION
                        RG         2                                      15 RG
                                                                                                                                                        PACKAGE
                        NC         3                                      14 NC                                                                         DRAWING       TEMPERATURE
                                                                                                               PRODUCT               PACKAGE            NUMBER(1)        RANGE
                       V–IN        4                                      13 V+
                                                                                                               INA114AP          8-Pin Plastic DIP          006        –40°C to +85°C
                       V+IN        5                                      12 Feedback
                                                                                                               INA114BP          8-Pin Plastic DIP          006        –40°C to +85°C
                        NC         6                                      11 VO                                INA114AU        SOL-16 Surface-Mount         211        –40°C to +85°C
                                                                                                               INA114BU        SOL-16 Surface-Mount         211        –40°C to +85°C
                         V–        7                                      10 Ref                              NOTE: (1) For detailed drawing and dimension table, please see end of data
                                                                                                              sheet, or Appendix C of Burr-Brown IC Data Book.
                        NC         8                                      9     NC




ABSOLUTE MAXIMUM RATINGS(1)
 Supply Voltage .................................................................................. ±18V
 Input Voltage Range .......................................................................... ±40V
 Output Short-Circuit (to ground) .............................................. Continuous
 Operating Temperature ................................................. –40°C to +125°C
 Storage Temperature ..................................................... –40°C to +125°C
 Junction Temperature .................................................................... +150°C
 Lead Temperature (soldering, 10s) ............................................... +300°C

NOTE: (1) Stresses above these ratings may cause permanent damage.




                                                                                                                                                                                           ®


                                                                                                          3                                            INA114
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, unless otherwise noted.




                                                               GAIN vs FREQUENCY                                                                                                      COMMON-MODE REJECTION vs FREQUENCY
                                                                                                                                                                        140
                                                                                                                                                                                   G = 100, 1k




                                                                                                                             Common-Mode Rejection (dB)
                                                                                                                                                                        120
                                  1k                                                                                                                                               G = 10
                                                                                                                                                                        100
                                                                                                                                                                                                                            G = 1k
   Gain (V/V)




                                 100                                                                                                                                     80                                                 G = 100

                                                                                                                                                                         60
                                  10
                                                                                                                                                                                                                                     G = 10
                                                                                                                                                                         40
                                   1                                                                                                                                                                                                 G=1
                                                                                                                                                                         20

                                                                                                                                                                          0
                                       10             100            1k            10k               100k         1M                                                          10            100        1k          10k         100k             1M
                                                                     Frequency (Hz)                                                                                                                    Frequency (Hz)




                                                 INPUT COMMON-MODE VOLTAGE RANGE                                                                                                         POSITIVE POWER SUPPLY REJECTION
                                                         vs OUTPUT VOLTAGE                                                                                                                         vs FREQUENCY
                                  15                                                                                                                                    140
                                                       y A1                                  Limit
                                                  ed b                                     + Ou ed by A
                                             Limit ut Swing                                     tput                                                                    120
                                                utp                                                  Swin2
                                                                                                                           Power Supply Rejection (dB)




                                  10
Common-Mode Voltage (V)




                                             +O                                                          g
                                                                      –
                                                            VD/2                                VO                                                                      100
                                   5                                  +
                                                                      –                                                                                                                                                              G = 1000
                                                            VD/2
                                                                      +                                                                                                  80
                                   0                           VCM                                                                                                                                                          G = 100
                                                                          (Any Gain)                                                                                     60                                                 G = 10
                                  –5             A3 – Output                                   A3 + Output
                                                                                                                                                                                                                            G=1
                                                 Swing Limit                                   Swing Limit                                                               40
                                              Lim
                                                  it
                                 –10        – O ed by                                                  by A 1 g
                                                utpu      A                                       ited     in                                                            20
                                                     t Sw 2
                                                         ing                                   Lim put Sw
                                                                                                 Ou t
                                 –15                                                           –                                                                          0
                                    –15           –10          –5            0             5           10         15                                                          10            100        1k          10k         100k             1M
                                                                Output Voltage (V)                                                                                                                     Frequency (Hz)




                                                  NEGATIVE POWER SUPPLY REJECTION                                                                                                           INPUT-REFERRED NOISE VOLTAGE
                                                            vs FREQUENCY                                                                                                                            vs FREQUENCY
                                 140                                                                                                                                     1k
                                                                                                                               Input-Referred Noise Voltage (nV/√ Hz)




                                 120                                             G = 100
   Power Supply Rejection (dB)




                                                                                                       G = 1000
                                 100
                                                                                                                                                                        100
                                                                                                                                                                                                                                  G=1
                                                                      G = 10
                                  80
                                                                      G=1

                                  60                                                                                                                                                                                              G = 10
                                                                                                                                                                         10
                                  40                                                                                                                                                                        G = 100, 1000

                                  20                                                                                                                                                                                     G = 1000
                                                                                                                                                                                                                         BW Limit
                                   0                                                                                                                                      1
                                       10             100            1k            10k               100k         1M                                                          1                   10         100             1k               10k
                                                                     Frequency (Hz)                                                                                                                    Frequency (Hz)




                                                  ®


                                                        INA114                                                         4
TYPICAL PERFORMANCE CURVES                                                                                                                            (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.




                                                                                         SETTLING TIME vs GAIN                                                                                                             OFFSET VOLTAGE WARM-UP vs TIME
                                           1200                                                                                                                                                              6

                                           1000                                                                                                                                                              4




                                                                                                                                                       Offset Voltage Change (µV)
                                                                                                                                                                                                                                       G ≥ 100
  Settling Time (µs)




                                                           800                                                                                                                                               2

                                                           600                                                                                                                                               0
                                                                                                                        0.01%

                                                           400                                                                                                                                              –2
                                                                                                                                    0.1%

                                                           200                                                                                                                                              –4

                                                             0                                                                                                                                              –6
                                                                 1                         10                     100                      1000                                                                  0    15         30      45        60      75      90    105   120
                                                                                                 Gain (V/V)                                                                                                                  Time from Power Supply Turn-on (s)




                                                                         INPUT BIAS AND INPUT OFFSET CURRENT                                                                                                                      INPUT BIAS CURRENT
                                                                                    vs TEMPERATURE                                                                                                                          vs DIFFERENTIAL INPUT VOLTAGE
                                                            2                                                                                                                                                3
                Input Bias and Input Offset Current (nA)




                                                                                                                                                                                                             2
                                                            1                                                                                                              Input Bias Current (mA)
                                                                                                                                                                                                             1
                                                                       ±IB
                                                            0                                                                                                                                                0
                                                                             IOS
                                                                                                                                                                                                            –1        G=1
                                                           –1
                                                                                                                                                                                                                        G = 10
                                                                                                                                                                                                            –2
                                                                                                                                                                                                                       G = 100
                                                                                                                                                                                                                                        G = 1000
                                                           –2                                                                                                                                               –3
                                                             –40                   –15          10           35               60            85                                                                –45      –30            –15          0          15        30     45
                                                                                             Temperature (°C)                                                                                                                 Differential Overload Voltage (V)




                                                                                     INPUT BIAS CURRENT
                                                                               vs COMMON-MODE INPUT VOLTAGE                                                                                                           MAXIMUM OUTPUT SWING vs FREQUENCY
                                                            3                                                                                                                                               32
                                                                                                                              Both Inputs                                                                   28
                                                            2                                                |Ib1| + |Ib2|
                                                                                                                                                                               Peak-to-Peak Amplitude (V)




                                                                                                                                                                                                                                                           G = 1, 10
                Input Bias Current (mA)




                                                                                                                               One Input                                                                    24
                                                            1                                                                                                                                                                                    G = 100
                                                                                                                                                                                                            20
                                                                                                                             Over-Voltage
                                                            0                                                                 Protection                                                                    16
                                                                 Over-Voltage                     Normal                                                                                                                              G = 1000
                                                                  Protection                     Operation                                                                                                  12
                                                           –1
                                                                                                                                                                                                             8
                                                                     One Input
                                                           –2
                                                                                                                                                                                                             4
                                                                             Both Inputs
                                                           –3                                                                                                                                                0
                                                             –45              –30         –15        0            15           30           45                                                                   10        100              1k          10k         100k       1M
                                                                                         Common-Mode Voltage (V)                                                                                                                            Frequency (Hz)




                                                                                                                                                                                                                                                                                    ®


                                                                                                                                                  5                                                                                              INA114
TYPICAL PERFORMANCE CURVES                                                                                                  (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.




                                         SLEW RATE vs TEMPERATURE                                                                        OUTPUT CURRENT LIMIT vs TEMPERATURE
                         1.0                                                                                                30




                                                                                               Short Circuit Current (mA)
                         0.8
                                                                                                                            25
Slew Rate (V/µs)




                         0.6
                                                                                                                                                                                 +|ICL|
                                                                                                                            20
                         0.4

                                                                                                                            15
                         0.2                                                                                                                                                                    –|ICL|


                          0                                                                                                 10
                           –75    –50    –25   0      25    50        75       100   125                                      –40               –15           10         35               60             85
                                               Temperature (°C)                                                                                          Temperature (°C)




                                                                                                                                       QUIESCENT CURRENT AND POWER DISSIPATION
                                   QUIESCENT CURRENT vs TEMPERATURE                                                                            vs POWER SUPPLY VOLTAGE
                         2.8                                                                                                2.6                                                                            120


                                                                                                                            2.5                                                                            100
                         2.6




                                                                                                                                                                                                                 Power Dissipation (mW)
                                                                                               Quiescent Current (mA)
Quiescent Current (mA)




                                                                                                                            2.4                                                                            80
                         2.4                                                                                                                                       Power Dissipation
                                                                                                                            2.3                                                                            60
                         2.2                                                                                                                                                  Quiescent Current
                                                                                                                            2.2                                                                            40

                         2.0                                                                                                2.1                                                                            20


                         1.8                                                                                                2.0                                                                            0
                            –75   –50    –25   0      25    50        75       100   125                                          0        ±3           ±6         ±9         ±12         ±15            ±18
                                               Temperature (°C)                                                                                       Power Supply Voltage (V)




                               POSITIVE SIGNAL SWING vs TEMPERATUE (RL = 2kΩ)                                                         NEGATIVE SIGNAL SWING vs TEMPERATUE (RL = 2kΩ)
                         16                                                                                                 –16
                                                                   VS = ±15V                                                                                                    VS = ±15V
                         14                                                                                                 –14

                         12                                                                                                 –12
                                                                                                                                                                                VS = ±11.4V
Output Voltage (V)




                                                                                                       Output Voltage (V)




                                                                  VS = ±11.4V
                         10                                                                                                 –10

                          8                                                                                                  –8

                          6                                                                                                  –6

                          4                                                                                                  –4
                                                                  VS = ±2.25V                                                                                                 VS = ±2.25V
                          2                                                                                                  –2

                          0                                                                                                   0
                           –75    –50    –25   0      25    50        75       100   125                                       –75        –50     –25        0      25    50        75         100       125
                                               Temperature (°C)                                                                                              Temperature (°C)




                                     ®


                                         INA114                                            6
TYPICAL PERFORMANCE CURVES                                                  (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.




                    LARGE SIGNAL RESPONSE, G = 1                                         SMALL SIGNAL RESPONSE, G = 1




                                                       +10V

                                                                                                                          +100mV

                                                       0                                                                  0



                                                       –10V                                                               –200mV




                  LARGE SIGNAL RESPONSE, G = 1000                                       SMALL SIGNAL RESPONSE, G = 1000




                                                       +10V                                                               +200mV



                                                       0                                                                  0



                                                       –10V                                                               –200mV




                                                    INPUT-REFERRED NOISE, 0.1 to 10Hz




                                                                                           0.1µV/div




                                                                  1 s/div




                                                                                                                                   ®


                                                                   7                                      INA114
APPLICATION INFORMATION
Figure 1 shows the basic connections required for operation                   ues. The accuracy and temperature coefficient of these
of the INA114. Applications with noisy or high impedance                      resistors are included in the gain accuracy and drift specifi-
power supplies may require decoupling capacitors close to                     cations of the INA114.
the device pins as shown.                                                     The stability and temperature drift of the external gain
The output is referred to the output reference (Ref) terminal                 setting resistor, RG, also affects gain. RG’s contribution to
which is normally grounded. This must be a low-impedance                      gain accuracy and drift can be directly inferred from the gain
connection to assure good common-mode rejection. A resis-                     equation (1). Low resistor values required for high gain can
tance of 5Ω in series with the Ref pin will cause a typical                   make wiring resistance important. Sockets add to the wiring
device to degrade to approximately 80dB CMR (G = 1).                          resistance which will contribute additional gain error (possi-
                                                                              bly an unstable gain error) in gains of approximately 100 or
SETTING THE GAIN                                                              greater.
Gain of the INA114 is set by connecting a single external
resistor, RG:                                                                 NOISE PERFORMANCE
                                                                              The INA114 provides very low noise in most applications.
                       G = 1 + 50 kΩ                                (1)       For differential source impedances less than 1kΩ, the INA103
                                RG
                                                                              may provide lower noise. For source impedances greater
Commonly used gains and resistor values are shown in                          than 50kΩ, the INA111 FET-input instrumentation ampli-
Figure 1.                                                                     fier may provide lower noise.
The 50kΩ term in equation (1) comes from the sum of the                       Low frequency noise of the INA114 is approximately
two internal feedback resistors. These are on-chip metal film                 0.4µVp-p measured from 0.1 to 10Hz. This is approximately
resistors which are laser trimmed to accurate absolute val-                   one-tenth the noise of “low noise” chopper-stabilized ampli-
                                                                              fiers.

                                                                               V+

                                                                                    0.1µF

                                           Pin numbers are
                                          for DIP packages.                   7

                          –         2   Over-Voltage                                  INA114
                        VIN
                                         Protection
                                                              A1
                                                                                                                                 +     –
                                                                              25kΩ              25kΩ                 VO = G • (VIN – VIN)
                                    1                                                                                           50kΩ
                                                                   25kΩ                                               G=1+
                                                                                                                                 RG
                                                                                                                6
                              RG                                                               A3
                                                                                                                                 +
                                    8
                                                                   25kΩ                                                  Load    VO
                                                                                                                                 –
                                                                                                                5
                                                              A2
                          +         3   Over-Voltage
                        VIN                                                   25kΩ              25kΩ
                                         Protection

                                                                              4     0.1µF

             DESIRED          RG          NEAREST 1% RG
             GAIN             (Ω)              (Ω)                                                       Also drawn in simplified form:
                                                                               V–
             1         No Connection        No Connection
             2            50.00k                49.9k                                           V–  IN
             5            12.50k                12.4k                                                               INA114                VO
                                                                                                           RG
             10           5.556k                5.62k
             20           2.632k                2.61k                                           V+  IN
                                                                                                                          Ref
             50            1.02k                1.02k
             100           505.1                 511
             200           251.3                 249
             500           100.2                 100
             1000          50.05                49.9
             2000          25.01                24.9
             5000          10.00                  10
             10000         5.001                4.99



FIGURE 1. Basic Connections.
             ®


                 INA114                                                   8
OFFSET TRIMMING
The INA114 is laser trimmed for very low offset voltage and
                                                                             Microphone,
drift. Most applications require no external offset adjust-                  Hydrophone                          INA114
ment. Figure 2 shows an optional circuit for trimming the                        etc.
output offset voltage. The voltage applied to Ref terminal is
summed at the output. Low impedance must be maintained                                     47kΩ       47kΩ
at this node to assure good common-mode rejection. This is
achieved by buffering trim voltage with an op amp as
shown.

    –                                                                         Thermocouple                       INA114
  VIN                                         V+
                             VO
        RG    INA114
                                                       100µA
    +                  Ref                          1/2 REF200                                     10kΩ
  VIN



                                                   100Ω
                            OPA177
                  ±10mV                    10kΩ
             Adjustment Range                                                                                    INA114
                                                   100Ω



                                                       100µA                                       Center-tap provides
                                                    1/2 REF200                                     bias current return.

                                              V–                        FIGURE 3. Providing an Input Common-Mode Current Path.
FIGURE 2. Optional Trimming of Output Offset Voltage.
                                                                        A combination of common-mode and differential input
                                                                        signals can cause the output of A1 or A2 to saturate. Figure
INPUT BIAS CURRENT RETURN PATH
                                                                        4 shows the output voltage swing of A1 and A2 expressed in
The input impedance of the INA114 is extremely high—                    terms of a common-mode and differential input voltages.
approximately 1010Ω. However, a path must be provided for               Output swing capability of these internal amplifiers is the
the input bias current of both inputs. This input bias current          same as the output amplifier, A3. For applications where
is typically less than ±1nA (it can be either polarity due to           input common-mode range must be maximized, limit the
cancellation circuitry). High input impedance means that                output voltage swing by connecting the INA114 in a lower
this input bias current changes very little with varying input          gain (see performance curve “Input Common-Mode Voltage
voltage.                                                                Range vs Output Voltage”). If necessary, add gain after the
Input circuitry must provide a path for this input bias current         INA114 to increase the voltage swing.
if the INA114 is to operate properly. Figure 3 shows various            Input-overload often produces an output voltage that appears
provisions for an input bias current path. Without a bias               normal. For example, an input voltage of +20V on one input
current return path, the inputs will float to a potential which         and +40V on the other input will obviously exceed the linear
exceeds the common-mode range of the INA114 and the                     common-mode range of both input amplifiers. Since both
input amplifiers will saturate. If the differential source resis-       input amplifiers are saturated to nearly the same output
tance is low, bias current return path can be connected to one          voltage limit, the difference voltage measured by the output
input (see thermocouple example in Figure 3). With higher               amplifier will be near zero. The output of the INA114 will
source impedance, using two resistors provides a balanced               be near 0V even though both inputs are overloaded.
input with possible advantages of lower input offset voltage
due to bias current and better common-mode rejection.
                                                                        INPUT PROTECTION
                                                                        The inputs of the INA114 are individually protected for
INPUT COMMON-MODE RANGE
                                                                        voltages up to ±40V. For example, a condition of –40V on
The linear common-mode range of the input op amps of the                one input and +40V on the other input will not cause
INA114 is approximately ±13.75V (or 1.25V from the                      damage. Internal circuitry on each input provides low series
power supplies). As the output voltage increases, however,              impedance under normal signal conditions. To provide
the linear input range will be limited by the output voltage            equivalent protection, series input resistors would contribute
swing of the input amplifiers, A1 and A2. The common-                   excessive noise. If the input is overloaded, the protection
mode range is related to the output voltage of the complete             circuitry limits the input current to a safe value (approxi-
amplifier—see performance curve “Input Common-Mode                      mately 1.5mA). The typical performance curve “Input Bias
Range vs Output Voltage.”                                               Current vs Common-Mode Input Voltage” shows this input


                                                                                                                                         ®


                                                                    9                                        INA114
current limit behavior. The inputs are protected even if no                          The output sense connection can be used to sense the output
power supply voltage is present.                                                     voltage directly at the load for best accuracy. Figure 5 shows
                                                                                     how to drive a load through series interconnection resis-
OUTPUT VOLTAGE SENSE (SOL-16 package only)                                           tance. Remotely located feedback paths may cause instabil-
                                                                                     ity. This can be generally be eliminated with a high
The surface-mount version of the INA114 has a separate
                                                                                     frequency feedback path through C1. Heavy loads or long
output sense feedback connection (pin 12). Pin 12 must be
                                                                                     lines can be driven by connecting a buffer inside the feed-
connected to the output terminal (pin 11) for proper opera-
                                                                                     back path (Figure 6).
tion. (This connection is made internally on the DIP version
of the INA114.)



                                                                                                            V+
                                                                           G • VD
                                                                   VCM –
                                                                              2

                                                                                                                 INA114
                                                 Over-Voltage
                                                  Protection
                                                                         A1
                             VD                                                             25kΩ              25kΩ                       50kΩ
                               2                                                                                                 G=1+
                                                                                                                                          RG
                                                                              25kΩ

                                         RG                                                                 A3                        VO = G • VD

                                                                              25kΩ
                             VD
                               2
                                                                         A2
                                                 Over-Voltage
                                                                                            25kΩ              25kΩ
                   VCM                            Protection


                                                                           G • VD
                                                                   VCM +
                                                                              2
                                                                                                            V–


FIGURE 4. Voltage Swing of A1 and A2.


                           Surface-mount package                                                                    Surface-mount package
                           version only.                                                                            version only.

  –                    Output
VIN                                     C1                                              –
                                                                                      VIN                     Output
                       Sense
                                      1000pF                                                                  Sense                     OPA633
         RG   INA114                                                                            RG                                                   IL: ±100mA
                                                                                                     INA114
  +                 Ref                                                                                       Ref         180Ω
VIN                                                                Load                 +
                                                                                      VIN                                                           RL



                         Equal resistance here preserves
                         good common-mode rejection.


FIGURE 5. Remote Load and Ground Sensing.                                            FIGURE 6. Buffered Output for Heavy Loads.




                                  –                                                                                              VO
                                VIN                                                    22.1kΩ
                                                                                                     511Ω   INA114
                                  +
                                VIN                                                    22.1kΩ
                                                                                                                    Ref
                                  Shield is driven at the
                                  common-mode potential.        100Ω                    For G = 100
                                                                                        RG = 511Ω // 2(22.1kΩ)
                                                                                        effective RG = 505Ω
                                                                       OPA602




FIGURE 7. Shield Driver Circuit.

              ®


                  INA114                                                       10
V+               V+


                                                                          REF200
                              Equal line resistance here creates           100µA
                              a small common-mode voltage
                              which is rejected by INA114.
                                               1

                                                                                                                             VO
                                    RTD                                                           RG        INA114
                                              2
                                                                                                                 Ref
                                                                               RZ
                                              3

                                              Resistance in this line causes                             VO = 0V at RRTD = RZ
                                              a small common-mode voltage
                                              which is rejected by INA114.


FIGURE 8. RTD Temperature Measurement Circuit.


                                                                                                       V+
                                                                                                        2


                                                                                    10.0V     6
                                                                                                  REF102

                                                           R1
                                                                                        R4
                                                           27k Ω
                                                                                        80.6k Ω             4


                                    1N4148                                 (2)
                                       (1)                R2              R7
                                               Cu         5.23k Ω         1MΩ                                                     VO
                                                                                                                INA114
                          K
                                               Cu                                                                      Ref


                                                          R3                            R5
                                                          100Ω                          50Ω


                                                                                              R6
                                                                                              100Ω
                                                                                              Zero Adj




                                  SEEBECK
      ISA                        COEFFICIENT              R2                R4
      TYPE       MATERIAL          (µV/°C)           (R3 = 100Ω)     (R5 + R6 = 100Ω)

      E           Chromel              58.5            3.48kΩ              56.2kΩ
                 Constantan
      J             Iron               50.2            4.12kΩ              64.9kΩ
                 Constantan
      K            Chromel             39.4            5.23kΩ              80.6kΩ
                    Alumel
      T           Copper               38.0            5.49kΩ              84.5kΩ
                 Constantan

     NOTES: (1) –2.1mV/°C at 200µA. (2) R7 provides down-scale burn-out indication.


FIGURE 9. Thermocouple Amplifier With Cold Junction Compensation.




                                                                                                                                            ®


                                                                           11                                                      INA114
2.8kΩ

                                                                                                                                        VO
                                            LA                                                              RG/2          INA114
                     RA
                                                                                                                               Ref
                                                                                                            2.8kΩ                    G = 10
                                                                   390kΩ
                                                                                               1/2
                                                                   1/2                       OPA2604
                             RL                                  OPA2604        10kΩ
                                           390kΩ




FIGURE 10. ECG Amplifier With Right-Leg Drive.



                                                                                                  –
           +10V                                                                                                                           VO
                                                                                                 VIN   RG     INA114
                                                                                                  +
                                                                                                                    Ref                 R1
                                                      G = 500                                                                C1
                                                                                                                                       1MΩ
           Bridge                                                                                                          0.1µF

                                RG                                    VO
                                                 INA114
                               100Ω
                                                           Ref                                                                                            1
                                                                                                                                              f–3dB =
                                                                                                                           OPA602                       2πR1C1
                                                                                                                                                   = 1.59Hz




FIGURE 11. Bridge Transducer Amplifier.                                                     FIGURE 12. AC-Coupled Instrumentation Amplifier.



     –                                                             VIN
                                                 R1         IO =       •G
                                                                   R
     VIN      RG    INA114
     +
                             Ref
                                                      IB


                                      A1                                   IO
                                                            Load




     A1             IB Error
     OPA177         ±1.5nA
     OPA602          1pA
     OPA128          75fA



FIGURE 13. Differential Voltage-to-Current Converter.




              ®


                   INA114                                                              12
PACKAGE OPTION ADDENDUM
       www.ti.com                                                                                                              16-Feb-2009



PACKAGING INFORMATION

      Orderable Device        Status (1)   Package     Package      Pins Package Eco Plan (2)     Lead/Ball Finish    MSL Peak Temp (3)
                                            Type       Drawing             Qty
         INA114AP              ACTIVE        PDIP          P          8      50   Green (RoHS &     CU NIPDAU        N / A for Pkg Type
                                                                                     no Sb/Br)
        INA114APG4             ACTIVE        PDIP          P          8      50   Green (RoHS &     CU NIPDAU        N / A for Pkg Type
                                                                                     no Sb/Br)
         INA114AU              ACTIVE        SOIC         DW         16      40   Green (RoHS &     CU NIPDAU        Level-3-260C-168 HR
                                                                                     no Sb/Br)
       INA114AU/1K             ACTIVE        SOIC         DW         16    1000 Green (RoHS &       CU NIPDAU        Level-3-260C-168 HR
                                                                                   no Sb/Br)
      INA114AU/1KE4            ACTIVE        SOIC         DW         16    1000 Green (RoHS &       CU NIPDAU        Level-3-260C-168 HR
                                                                                   no Sb/Br)
        INA114AUE4             ACTIVE        SOIC         DW         16      40   Green (RoHS &     CU NIPDAU        Level-3-260C-168 HR
                                                                                     no Sb/Br)
        INA114AUG4             ACTIVE        SOIC         DW         16      40   Green (RoHS &     CU NIPDAU        Level-3-260C-168 HR
                                                                                     no Sb/Br)
         INA114BP              ACTIVE        PDIP          P          8      50   Green (RoHS &     CU NIPDAU        N / A for Pkg Type
                                                                                     no Sb/Br)
        INA114BPG4             ACTIVE        PDIP          P          8      50   Green (RoHS &     CU NIPDAU        N / A for Pkg Type
                                                                                     no Sb/Br)
         INA114BU              ACTIVE        SOIC         DW         16      40   Green (RoHS &     CU NIPDAU        Level-3-260C-168 HR
                                                                                     no Sb/Br)
       INA114BU/1K             ACTIVE        SOIC         DW         16    1000 Green (RoHS &       CU NIPDAU        Level-3-260C-168 HR
                                                                                   no Sb/Br)
      INA114BU/1KE4            ACTIVE        SOIC         DW         16    1000 Green (RoHS &       CU NIPDAU        Level-3-260C-168 HR
                                                                                   no Sb/Br)
        INA114BUE4             ACTIVE        SOIC         DW         16      40   Green (RoHS &     CU NIPDAU        Level-3-260C-168 HR
                                                                                     no Sb/Br)
(1)
   The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

(2)
   Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)
   MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on




                                                               Addendum-Page 1
PACKAGE OPTION ADDENDUM
       www.ti.com                                                                                                                        16-Feb-2009



incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.




                                                                   Addendum-Page 2
PACKAGE MATERIALS INFORMATION
      www.ti.com                                                                                                   11-Mar-2008



TAPE AND REEL INFORMATION




*All dimensions are nominal
          Device              Package Package Pins   SPQ       Reel   Reel         A0 (mm)   B0 (mm)   K0 (mm)    P1     W     Pin1
                               Type Drawing                  Diameter Width                                      (mm)   (mm) Quadrant
                                                               (mm) W1 (mm)
      INA114AU/1K              SOIC     DW     16    1000      330.0     16.4       10.85     10.8       2.7     12.0   16.0     Q1
      INA114BU/1K              SOIC     DW     16    1000      330.0     16.4       10.85     10.8       2.7     12.0   16.0     Q1




                                                           Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
      www.ti.com                                                                                                    11-Mar-2008




*All dimensions are nominal
          Device              Package Type   Package Drawing   Pins    SPQ     Length (mm)   Width (mm)   Height (mm)
       INA114AU/1K               SOIC             DW           16      1000       346.0        346.0         33.0
       INA114BU/1K               SOIC             DW           16      1000       346.0        346.0         33.0




                                                       Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information
published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a
warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual
property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied
by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional
restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not
responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in
such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are
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products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products                                                               Applications
Amplifiers                      amplifier.ti.com                       Audio                         www.ti.com/audio
Data Converters                 dataconverter.ti.com                   Automotive                    www.ti.com/automotive
DLP® Products                   www.dlp.com                            Broadband                     www.ti.com/broadband
DSP                             dsp.ti.com                             Digital Control               www.ti.com/digitalcontrol
Clocks and Timers               www.ti.com/clocks                      Medical                       www.ti.com/medical
Interface                       interface.ti.com                       Military                      www.ti.com/military
Logic                           logic.ti.com                           Optical Networking            www.ti.com/opticalnetwork
Power Mgmt                      power.ti.com                           Security                      www.ti.com/security
Microcontrollers                microcontroller.ti.com                 Telephony                     www.ti.com/telephony
RFID                            www.ti-rfid.com                        Video & Imaging               www.ti.com/video
RF/IF and ZigBee® Solutions     www.ti.com/lprf                        Wireless                      www.ti.com/wireless
                             Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                            Copyright © 2009, Texas Instruments Incorporated

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Ina114

  • 1. INA ® 114 INA114 INA 114 Precision INSTRUMENTATION AMPLIFIER FEATURES DESCRIPTION q LOW OFFSET VOLTAGE: 50µV max The INA114 is a low cost, general purpose instrumen- q LOW DRIFT: 0.25µV/°C max tation amplifier offering excellent accuracy. Its versa- tile 3-op amp design and small size make it ideal for a q LOW INPUT BIAS CURRENT: 2nA max wide range of applications. q HIGH COMMON-MODE REJECTION: A single external resistor sets any gain from 1 to 10,000. 115dB min Internal input protection can withstand up to ±40V q INPUT OVER-VOLTAGE PROTECTION: without damage. ±40V The INA114 is laser trimmed for very low offset voltage q WIDE SUPPLY RANGE: ±2.25 to ±18V (50µV), drift (0.25µV/°C) and high common-mode q LOW QUIESCENT CURRENT: 3mA max rejection (115dB at G = 1000). It operates with power q 8-PIN PLASTIC AND SOL-16 supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent cur- rent is 3mA maximum. APPLICATIONS The INA114 is available in 8-pin plastic and SOL-16 surface-mount packages. Both are specified for the q BRIDGE AMPLIFIER –40°C to +85°C temperature range. q THERMOCOUPLE AMPLIFIER q RTD SENSOR AMPLIFIER q MEDICAL INSTRUMENTATION q DATA ACQUISITION V+ 7 (13) – 2 Over-Voltage INA114 VIN Feedback (4) Protection A1 (12) 25kΩ 25kΩ 1 DIP Connected 25kΩ Internally (2) 6 RG A3 VO (11) 8 50kΩ 25kΩ G=1+ (15) RG 5 A2 Ref + 3 Over-Voltage (10) VIN 25kΩ 25kΩ (5) Protection 4 (7) DIP (SOIC) V– International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ® ©1992 Burr-Brown Corporation 1 PDS-1142D INA114 Printed in U.S.A. March, 1998 SBOS014
  • 2. SPECIFICATIONS ELECTRICAL At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted. INA114BP, BU INA114AP, AU PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS INPUT Offset Voltage, RTI Initial TA = +25°C ±10 + 20/G ±50 + 100/G ±25 + 30/G ±125 + 500/G µV vs Temperature TA = TMIN to TMAX ±0.1 + 0.5/G ±0.25 + 5/G ±0.25 + 5/G ±1 + 10/G µV/°C vs Power Supply VS = ±2.25V to ±18V 0.5 + 2/G 3 + 10/G T T µV/V Long-Term Stability ±0.2 + 0.5/G T µV/mo Impedance, Differential 1010 || 6 T Ω || pF Common-Mode 1010 || 6 T Ω || pF Input Common-Mode Range ±11 ±13.5 T T V Safe Input Voltage ±40 T V Common-Mode Rejection VCM = ±10V, ∆RS = 1kΩ G=1 80 96 75 90 dB G = 10 96 115 90 106 dB G = 100 110 120 106 110 dB G = 1000 115 120 106 110 dB BIAS CURRENT ±0.5 ±2 T ±5 nA vs Temperature ±8 T pA/°C OFFSET CURRENT ±0.5 ±2 T ±5 nA vs Temperature ±8 T pA/°C NOISE VOLTAGE, RTI G = 1000, RS = 0Ω f = 10Hz 15 T nV/√Hz f = 100Hz 11 T nV/√Hz f = 1kHz 11 T nV/√Hz fB = 0.1Hz to 10Hz 0.4 T µVp-p Noise Current f=10Hz 0.4 T pA/√Hz f=1kHz 0.2 T pA/√Hz fB = 0.1Hz to 10Hz 18 T pAp-p GAIN Gain Equation 1 + (50kΩ/RG) T V/V Range of Gain 1 10000 T T V/V Gain Error G=1 ±0.01 ±0.05 T T % G = 10 ±0.02 ±0.4 T ±0.5 % G = 100 ±0.05 ±0.5 T ±0.7 % G = 1000 ±0.5 ±1 T ±2 % Gain vs Temperature G=1 ±2 ±10 T ±10 ppm/°C 50kΩ Resistance(1) ±25 ±100 T T ppm/°C Nonlinearity G=1 ±0.0001 ±0.001 T ±0.002 % of FSR G = 10 ±0.0005 ±0.002 T ±0.004 % of FSR G = 100 ±0.0005 ±0.002 T ±0.004 % of FSR G = 1000 ±0.002 ±0.01 T ±0.02 % of FSR OUTPUT Voltage IO = 5mA, TMIN to TMAX ±13.5 ±13.7 T T V VS = ±11.4V, RL = 2kΩ ±10 ±10.5 T T V VS = ±2.25V, RL = 2kΩ ±1 ±1.5 T T V Load Capacitance Stability 1000 T pF Short Circuit Current +20/–15 T mA FREQUENCY RESPONSE Bandwidth, –3dB G=1 1 T MHz G = 10 100 T kHz G = 100 10 T kHz G = 1000 1 T kHz Slew Rate VO = ±10V, G = 10 0.3 0.6 T T V/µs Settling Time, 0.01% G=1 18 T µs G = 10 20 T µs G = 100 120 T µs G = 1000 1100 T µs Overload Recovery 50% Overdrive 20 T µs POWER SUPPLY Voltage Range ±2.25 ±15 ±18 T T T V Current VIN = 0V ±2.2 ±3 T T mA TEMPERATURE RANGE Specification –40 85 T T °C Operating –40 125 T T °C θJA 80 T °C/W T Specification same as INA114BP/BU. NOTE: (1) Temperature coefficient of the “50kΩ” term in the gain equation. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® INA114 2
  • 3. PIN CONFIGURATIONS ELECTROSTATIC P Package 8-Pin DIP DISCHARGE SENSITIVITY Top View This integrated circuit can be damaged by ESD. Burr-Brown RG 1 8 RG recommends that all integrated circuits be handled with ap- V–IN 2 7 V+ propriate precautions. Failure to observe proper handling and installation procedures can cause damage. + V IN 3 6 VO ESD damage can range from subtle performance degradation V– 4 5 Ref to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric U Package SOL-16 Surface-Mount changes could cause the device not to meet its published Top View specifications. NC 1 16 NC PACKAGE/ORDERING INFORMATION RG 2 15 RG PACKAGE NC 3 14 NC DRAWING TEMPERATURE PRODUCT PACKAGE NUMBER(1) RANGE V–IN 4 13 V+ INA114AP 8-Pin Plastic DIP 006 –40°C to +85°C V+IN 5 12 Feedback INA114BP 8-Pin Plastic DIP 006 –40°C to +85°C NC 6 11 VO INA114AU SOL-16 Surface-Mount 211 –40°C to +85°C INA114BU SOL-16 Surface-Mount 211 –40°C to +85°C V– 7 10 Ref NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. NC 8 9 NC ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage .................................................................................. ±18V Input Voltage Range .......................................................................... ±40V Output Short-Circuit (to ground) .............................................. Continuous Operating Temperature ................................................. –40°C to +125°C Storage Temperature ..................................................... –40°C to +125°C Junction Temperature .................................................................... +150°C Lead Temperature (soldering, 10s) ............................................... +300°C NOTE: (1) Stresses above these ratings may cause permanent damage. ® 3 INA114
  • 4. TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±15V, unless otherwise noted. GAIN vs FREQUENCY COMMON-MODE REJECTION vs FREQUENCY 140 G = 100, 1k Common-Mode Rejection (dB) 120 1k G = 10 100 G = 1k Gain (V/V) 100 80 G = 100 60 10 G = 10 40 1 G=1 20 0 10 100 1k 10k 100k 1M 10 100 1k 10k 100k 1M Frequency (Hz) Frequency (Hz) INPUT COMMON-MODE VOLTAGE RANGE POSITIVE POWER SUPPLY REJECTION vs OUTPUT VOLTAGE vs FREQUENCY 15 140 y A1 Limit ed b + Ou ed by A Limit ut Swing tput 120 utp Swin2 Power Supply Rejection (dB) 10 Common-Mode Voltage (V) +O g – VD/2 VO 100 5 + – G = 1000 VD/2 + 80 0 VCM G = 100 (Any Gain) 60 G = 10 –5 A3 – Output A3 + Output G=1 Swing Limit Swing Limit 40 Lim it –10 – O ed by by A 1 g utpu A ited in 20 t Sw 2 ing Lim put Sw Ou t –15 – 0 –15 –10 –5 0 5 10 15 10 100 1k 10k 100k 1M Output Voltage (V) Frequency (Hz) NEGATIVE POWER SUPPLY REJECTION INPUT-REFERRED NOISE VOLTAGE vs FREQUENCY vs FREQUENCY 140 1k Input-Referred Noise Voltage (nV/√ Hz) 120 G = 100 Power Supply Rejection (dB) G = 1000 100 100 G=1 G = 10 80 G=1 60 G = 10 10 40 G = 100, 1000 20 G = 1000 BW Limit 0 1 10 100 1k 10k 100k 1M 1 10 100 1k 10k Frequency (Hz) Frequency (Hz) ® INA114 4
  • 5. TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±15V, unless otherwise noted. SETTLING TIME vs GAIN OFFSET VOLTAGE WARM-UP vs TIME 1200 6 1000 4 Offset Voltage Change (µV) G ≥ 100 Settling Time (µs) 800 2 600 0 0.01% 400 –2 0.1% 200 –4 0 –6 1 10 100 1000 0 15 30 45 60 75 90 105 120 Gain (V/V) Time from Power Supply Turn-on (s) INPUT BIAS AND INPUT OFFSET CURRENT INPUT BIAS CURRENT vs TEMPERATURE vs DIFFERENTIAL INPUT VOLTAGE 2 3 Input Bias and Input Offset Current (nA) 2 1 Input Bias Current (mA) 1 ±IB 0 0 IOS –1 G=1 –1 G = 10 –2 G = 100 G = 1000 –2 –3 –40 –15 10 35 60 85 –45 –30 –15 0 15 30 45 Temperature (°C) Differential Overload Voltage (V) INPUT BIAS CURRENT vs COMMON-MODE INPUT VOLTAGE MAXIMUM OUTPUT SWING vs FREQUENCY 3 32 Both Inputs 28 2 |Ib1| + |Ib2| Peak-to-Peak Amplitude (V) G = 1, 10 Input Bias Current (mA) One Input 24 1 G = 100 20 Over-Voltage 0 Protection 16 Over-Voltage Normal G = 1000 Protection Operation 12 –1 8 One Input –2 4 Both Inputs –3 0 –45 –30 –15 0 15 30 45 10 100 1k 10k 100k 1M Common-Mode Voltage (V) Frequency (Hz) ® 5 INA114
  • 6. TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±15V, unless otherwise noted. SLEW RATE vs TEMPERATURE OUTPUT CURRENT LIMIT vs TEMPERATURE 1.0 30 Short Circuit Current (mA) 0.8 25 Slew Rate (V/µs) 0.6 +|ICL| 20 0.4 15 0.2 –|ICL| 0 10 –75 –50 –25 0 25 50 75 100 125 –40 –15 10 35 60 85 Temperature (°C) Temperature (°C) QUIESCENT CURRENT AND POWER DISSIPATION QUIESCENT CURRENT vs TEMPERATURE vs POWER SUPPLY VOLTAGE 2.8 2.6 120 2.5 100 2.6 Power Dissipation (mW) Quiescent Current (mA) Quiescent Current (mA) 2.4 80 2.4 Power Dissipation 2.3 60 2.2 Quiescent Current 2.2 40 2.0 2.1 20 1.8 2.0 0 –75 –50 –25 0 25 50 75 100 125 0 ±3 ±6 ±9 ±12 ±15 ±18 Temperature (°C) Power Supply Voltage (V) POSITIVE SIGNAL SWING vs TEMPERATUE (RL = 2kΩ) NEGATIVE SIGNAL SWING vs TEMPERATUE (RL = 2kΩ) 16 –16 VS = ±15V VS = ±15V 14 –14 12 –12 VS = ±11.4V Output Voltage (V) Output Voltage (V) VS = ±11.4V 10 –10 8 –8 6 –6 4 –4 VS = ±2.25V VS = ±2.25V 2 –2 0 0 –75 –50 –25 0 25 50 75 100 125 –75 –50 –25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) ® INA114 6
  • 7. TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±15V, unless otherwise noted. LARGE SIGNAL RESPONSE, G = 1 SMALL SIGNAL RESPONSE, G = 1 +10V +100mV 0 0 –10V –200mV LARGE SIGNAL RESPONSE, G = 1000 SMALL SIGNAL RESPONSE, G = 1000 +10V +200mV 0 0 –10V –200mV INPUT-REFERRED NOISE, 0.1 to 10Hz 0.1µV/div 1 s/div ® 7 INA114
  • 8. APPLICATION INFORMATION Figure 1 shows the basic connections required for operation ues. The accuracy and temperature coefficient of these of the INA114. Applications with noisy or high impedance resistors are included in the gain accuracy and drift specifi- power supplies may require decoupling capacitors close to cations of the INA114. the device pins as shown. The stability and temperature drift of the external gain The output is referred to the output reference (Ref) terminal setting resistor, RG, also affects gain. RG’s contribution to which is normally grounded. This must be a low-impedance gain accuracy and drift can be directly inferred from the gain connection to assure good common-mode rejection. A resis- equation (1). Low resistor values required for high gain can tance of 5Ω in series with the Ref pin will cause a typical make wiring resistance important. Sockets add to the wiring device to degrade to approximately 80dB CMR (G = 1). resistance which will contribute additional gain error (possi- bly an unstable gain error) in gains of approximately 100 or SETTING THE GAIN greater. Gain of the INA114 is set by connecting a single external resistor, RG: NOISE PERFORMANCE The INA114 provides very low noise in most applications. G = 1 + 50 kΩ (1) For differential source impedances less than 1kΩ, the INA103 RG may provide lower noise. For source impedances greater Commonly used gains and resistor values are shown in than 50kΩ, the INA111 FET-input instrumentation ampli- Figure 1. fier may provide lower noise. The 50kΩ term in equation (1) comes from the sum of the Low frequency noise of the INA114 is approximately two internal feedback resistors. These are on-chip metal film 0.4µVp-p measured from 0.1 to 10Hz. This is approximately resistors which are laser trimmed to accurate absolute val- one-tenth the noise of “low noise” chopper-stabilized ampli- fiers. V+ 0.1µF Pin numbers are for DIP packages. 7 – 2 Over-Voltage INA114 VIN Protection A1 + – 25kΩ 25kΩ VO = G • (VIN – VIN) 1 50kΩ 25kΩ G=1+ RG 6 RG A3 + 8 25kΩ Load VO – 5 A2 + 3 Over-Voltage VIN 25kΩ 25kΩ Protection 4 0.1µF DESIRED RG NEAREST 1% RG GAIN (Ω) (Ω) Also drawn in simplified form: V– 1 No Connection No Connection 2 50.00k 49.9k V– IN 5 12.50k 12.4k INA114 VO RG 10 5.556k 5.62k 20 2.632k 2.61k V+ IN Ref 50 1.02k 1.02k 100 505.1 511 200 251.3 249 500 100.2 100 1000 50.05 49.9 2000 25.01 24.9 5000 10.00 10 10000 5.001 4.99 FIGURE 1. Basic Connections. ® INA114 8
  • 9. OFFSET TRIMMING The INA114 is laser trimmed for very low offset voltage and Microphone, drift. Most applications require no external offset adjust- Hydrophone INA114 ment. Figure 2 shows an optional circuit for trimming the etc. output offset voltage. The voltage applied to Ref terminal is summed at the output. Low impedance must be maintained 47kΩ 47kΩ at this node to assure good common-mode rejection. This is achieved by buffering trim voltage with an op amp as shown. – Thermocouple INA114 VIN V+ VO RG INA114 100µA + Ref 1/2 REF200 10kΩ VIN 100Ω OPA177 ±10mV 10kΩ Adjustment Range INA114 100Ω 100µA Center-tap provides 1/2 REF200 bias current return. V– FIGURE 3. Providing an Input Common-Mode Current Path. FIGURE 2. Optional Trimming of Output Offset Voltage. A combination of common-mode and differential input signals can cause the output of A1 or A2 to saturate. Figure INPUT BIAS CURRENT RETURN PATH 4 shows the output voltage swing of A1 and A2 expressed in The input impedance of the INA114 is extremely high— terms of a common-mode and differential input voltages. approximately 1010Ω. However, a path must be provided for Output swing capability of these internal amplifiers is the the input bias current of both inputs. This input bias current same as the output amplifier, A3. For applications where is typically less than ±1nA (it can be either polarity due to input common-mode range must be maximized, limit the cancellation circuitry). High input impedance means that output voltage swing by connecting the INA114 in a lower this input bias current changes very little with varying input gain (see performance curve “Input Common-Mode Voltage voltage. Range vs Output Voltage”). If necessary, add gain after the Input circuitry must provide a path for this input bias current INA114 to increase the voltage swing. if the INA114 is to operate properly. Figure 3 shows various Input-overload often produces an output voltage that appears provisions for an input bias current path. Without a bias normal. For example, an input voltage of +20V on one input current return path, the inputs will float to a potential which and +40V on the other input will obviously exceed the linear exceeds the common-mode range of the INA114 and the common-mode range of both input amplifiers. Since both input amplifiers will saturate. If the differential source resis- input amplifiers are saturated to nearly the same output tance is low, bias current return path can be connected to one voltage limit, the difference voltage measured by the output input (see thermocouple example in Figure 3). With higher amplifier will be near zero. The output of the INA114 will source impedance, using two resistors provides a balanced be near 0V even though both inputs are overloaded. input with possible advantages of lower input offset voltage due to bias current and better common-mode rejection. INPUT PROTECTION The inputs of the INA114 are individually protected for INPUT COMMON-MODE RANGE voltages up to ±40V. For example, a condition of –40V on The linear common-mode range of the input op amps of the one input and +40V on the other input will not cause INA114 is approximately ±13.75V (or 1.25V from the damage. Internal circuitry on each input provides low series power supplies). As the output voltage increases, however, impedance under normal signal conditions. To provide the linear input range will be limited by the output voltage equivalent protection, series input resistors would contribute swing of the input amplifiers, A1 and A2. The common- excessive noise. If the input is overloaded, the protection mode range is related to the output voltage of the complete circuitry limits the input current to a safe value (approxi- amplifier—see performance curve “Input Common-Mode mately 1.5mA). The typical performance curve “Input Bias Range vs Output Voltage.” Current vs Common-Mode Input Voltage” shows this input ® 9 INA114
  • 10. current limit behavior. The inputs are protected even if no The output sense connection can be used to sense the output power supply voltage is present. voltage directly at the load for best accuracy. Figure 5 shows how to drive a load through series interconnection resis- OUTPUT VOLTAGE SENSE (SOL-16 package only) tance. Remotely located feedback paths may cause instabil- ity. This can be generally be eliminated with a high The surface-mount version of the INA114 has a separate frequency feedback path through C1. Heavy loads or long output sense feedback connection (pin 12). Pin 12 must be lines can be driven by connecting a buffer inside the feed- connected to the output terminal (pin 11) for proper opera- back path (Figure 6). tion. (This connection is made internally on the DIP version of the INA114.) V+ G • VD VCM – 2 INA114 Over-Voltage Protection A1 VD 25kΩ 25kΩ 50kΩ 2 G=1+ RG 25kΩ RG A3 VO = G • VD 25kΩ VD 2 A2 Over-Voltage 25kΩ 25kΩ VCM Protection G • VD VCM + 2 V– FIGURE 4. Voltage Swing of A1 and A2. Surface-mount package Surface-mount package version only. version only. – Output VIN C1 – VIN Output Sense 1000pF Sense OPA633 RG INA114 RG IL: ±100mA INA114 + Ref Ref 180Ω VIN Load + VIN RL Equal resistance here preserves good common-mode rejection. FIGURE 5. Remote Load and Ground Sensing. FIGURE 6. Buffered Output for Heavy Loads. – VO VIN 22.1kΩ 511Ω INA114 + VIN 22.1kΩ Ref Shield is driven at the common-mode potential. 100Ω For G = 100 RG = 511Ω // 2(22.1kΩ) effective RG = 505Ω OPA602 FIGURE 7. Shield Driver Circuit. ® INA114 10
  • 11. V+ V+ REF200 Equal line resistance here creates 100µA a small common-mode voltage which is rejected by INA114. 1 VO RTD RG INA114 2 Ref RZ 3 Resistance in this line causes VO = 0V at RRTD = RZ a small common-mode voltage which is rejected by INA114. FIGURE 8. RTD Temperature Measurement Circuit. V+ 2 10.0V 6 REF102 R1 R4 27k Ω 80.6k Ω 4 1N4148 (2) (1) R2 R7 Cu 5.23k Ω 1MΩ VO INA114 K Cu Ref R3 R5 100Ω 50Ω R6 100Ω Zero Adj SEEBECK ISA COEFFICIENT R2 R4 TYPE MATERIAL (µV/°C) (R3 = 100Ω) (R5 + R6 = 100Ω) E Chromel 58.5 3.48kΩ 56.2kΩ Constantan J Iron 50.2 4.12kΩ 64.9kΩ Constantan K Chromel 39.4 5.23kΩ 80.6kΩ Alumel T Copper 38.0 5.49kΩ 84.5kΩ Constantan NOTES: (1) –2.1mV/°C at 200µA. (2) R7 provides down-scale burn-out indication. FIGURE 9. Thermocouple Amplifier With Cold Junction Compensation. ® 11 INA114
  • 12. 2.8kΩ VO LA RG/2 INA114 RA Ref 2.8kΩ G = 10 390kΩ 1/2 1/2 OPA2604 RL OPA2604 10kΩ 390kΩ FIGURE 10. ECG Amplifier With Right-Leg Drive. – +10V VO VIN RG INA114 + Ref R1 G = 500 C1 1MΩ Bridge 0.1µF RG VO INA114 100Ω Ref 1 f–3dB = OPA602 2πR1C1 = 1.59Hz FIGURE 11. Bridge Transducer Amplifier. FIGURE 12. AC-Coupled Instrumentation Amplifier. – VIN R1 IO = •G R VIN RG INA114 + Ref IB A1 IO Load A1 IB Error OPA177 ±1.5nA OPA602 1pA OPA128 75fA FIGURE 13. Differential Voltage-to-Current Converter. ® INA114 12
  • 13. PACKAGE OPTION ADDENDUM www.ti.com 16-Feb-2009 PACKAGING INFORMATION Orderable Device Status (1) Package Package Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3) Type Drawing Qty INA114AP ACTIVE PDIP P 8 50 Green (RoHS & CU NIPDAU N / A for Pkg Type no Sb/Br) INA114APG4 ACTIVE PDIP P 8 50 Green (RoHS & CU NIPDAU N / A for Pkg Type no Sb/Br) INA114AU ACTIVE SOIC DW 16 40 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114AU/1K ACTIVE SOIC DW 16 1000 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114AU/1KE4 ACTIVE SOIC DW 16 1000 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114AUE4 ACTIVE SOIC DW 16 40 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114AUG4 ACTIVE SOIC DW 16 40 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114BP ACTIVE PDIP P 8 50 Green (RoHS & CU NIPDAU N / A for Pkg Type no Sb/Br) INA114BPG4 ACTIVE PDIP P 8 50 Green (RoHS & CU NIPDAU N / A for Pkg Type no Sb/Br) INA114BU ACTIVE SOIC DW 16 40 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114BU/1K ACTIVE SOIC DW 16 1000 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114BU/1KE4 ACTIVE SOIC DW 16 1000 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) INA114BUE4 ACTIVE SOIC DW 16 40 Green (RoHS & CU NIPDAU Level-3-260C-168 HR no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on Addendum-Page 1
  • 14. PACKAGE OPTION ADDENDUM www.ti.com 16-Feb-2009 incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2
  • 15. PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins SPQ Reel Reel A0 (mm) B0 (mm) K0 (mm) P1 W Pin1 Type Drawing Diameter Width (mm) (mm) Quadrant (mm) W1 (mm) INA114AU/1K SOIC DW 16 1000 330.0 16.4 10.85 10.8 2.7 12.0 16.0 Q1 INA114BU/1K SOIC DW 16 1000 330.0 16.4 10.85 10.8 2.7 12.0 16.0 Q1 Pack Materials-Page 1
  • 16. PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) INA114AU/1K SOIC DW 16 1000 346.0 346.0 33.0 INA114BU/1K SOIC DW 16 1000 346.0 346.0 33.0 Pack Materials-Page 2
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