SPICE MODEL of NJM2125 in SPICE PARK. English Version is http://www.spicepark.net. Japanese Version is http://www.spicepark.com by Bee Technologies.

1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: NJM2125
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. Spice Model U17
+ -
NJM2125
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. Output Voltage Swing,+ Vout and –Vout
Simulation result
4.0V
2.0V
0V
-2.0V
-500mV 0V 500mV
V(Vout)
V_V1
Evaluation circuit
Rload
2k Vout
U17
+-
NJM2125
V1
0Vdc V- V+
0Vdc
5Vdc
0 0
Output Voltage Swing Data sheet Simulation %Error
+Vout(V) 3.500 3.498 -0.057
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. Input Offset Voltage
Simulation result
4.0V
2.0V
0V
0V 1.0mV 2.0mV 3.0mV 4.0mV
V(Vout)
V_Vin
Evaluation circuit
Rload
2k Vout
U17
+ -
NJM2125
Vin V- Vi V+
VOFF = 0 VOFF = 0
VAMPL = 0 0Vdc VAMPL = 0
FREQ = 0 FREQ = 0 5Vdc
AC = 0 AC = 0
DC = 0 DC = 0
0 0
Measurement Simulation Error
Vos
2.000 mV 1.950 mV -2.500 %
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Slew Rate, +SR, -SR
Simulation result
4.0V
2.0V
0V
0s 1.0us 2.0us 3.0us 4.0us
V(Vout)
Time
Evaluation circuit
Rload
2k Vout
U17
+-
V1 = 0 Vi
V2 = 10
TD = 0
TR = 10n
NJM2125
TF = 10n
PW = 5u V- Vin V+
PER = 500u VOFF = 0
0Vdc VAMPL = 0
-1.95m FREQ = 0 5Vdc
V2 AC = 0
DC = 0
0 0
Data sheet Simulation %Error
Slew Rate(v/us)
1.200V/us 1.181V/us -1.583
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. Input current Ib, Ibos
Simulation result
28nA
26nA
24nA
22nA
0s 0.5ms 1.0ms
I(Vi) I(Vin)
Time
Evaluation circuit
Rload
2k Vout
U17
+-
NJM2125
Vin V- Vi V+
VOFF = -1.95m VOFF = 0
VAMPL = 0 -0Vdc VAMPL = 0
FREQ = 0 FREQ = 0 5Vdc
AC = 0 AC = 0
DC = 0 DC = 0
0 0
Data sheet Simulation %Error
Ib(nA) 25.000 25.100 0.400
Ibos(nA) 5.000 5.000 0.000
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

7. Open Loop Voltage Gain vs. Frequency, Av-dc, f-0dB
Simulation result
100
50
0
1.0Hz 1.0KHz 1.0MHz 100MHz
DB(V(Vout)/V(Vin:+))
Frequency
Evaluation circuit
Rload
2k Vout
U17
+ -
NJM2125
Vi V- Vin
VOFF = 0 VOFF = 0 V+
VAMPL = 0 0Vdc VAMPL = 0
FREQ = 0 FREQ = 0
AC = 0 AC = 1m 5Vdc
DC = 0 DC = -1.95m
0 0
Data sheet Simulation %Error
f-0dB(MHz) 1.200 1.180 -1.667
Av-dc(dB) 100.000 99.382 -0.618
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

8. Common-Mode Rejection Voltage gain
Simulation result
4.0V
2.0V
0V
0s 1.0s 2.0s 3.0s 4.0s
V(Vout)
Time
Evaluation circuit
Vout U17
A
+ -
B
-1.029mVdc V1 + -
V+
NJM2140
V-
V 2.5Vdc
VOFF = 0
VAMPL = 0.5 -2.5Vdc
FREQ = 1
AC = 0
DC = 0
0
Common Mode Reject Ratio=93132.229/3.121=29840.509
Data sheet Simulation %Error
CMRR
90.000 89.496 -0.560
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005