This document summarizes the simulation results of an operational amplifier component (NJM2068M) for key parameters including output voltage swing, input offset voltage, slew rate, input current, open loop voltage gain, and common mode rejection ratio. The simulation results are compared to the datasheet specifications and percent errors are reported to validate the accuracy of the SPICE model.

1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: NJM2068M
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

2. Spice Model U13
OUT1 VCC
-IN1 OUT2
+IN1 -IN2
VEE +IN2
NJM2068_SUB
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

3. Output Voltage Swing, +Vout and –Vout
Simulation result
These simulation results are compared with +Vout
Evaluation circuit
Rload
10K Vout U13
OUT1 VCC
-IN1 OUT2
V1 +IN1 -IN2
0Vdc
VEE +IN2
NJM2068_SUB V+
V2 Rload2
V- 0Vdc
10k 15Vdc
-15Vdc
0 0
Output Voltage Swing Data sheet Simulation %Error
+Vout(V) +13.5 13.496 0.029
-Vout(V) -13.5 -13.496 0.029
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

4. Input Offset Voltage
Simulation result
Evaluation circuit
Rload
10k Vout U8
OUT1 VCC
-IN1 OUT2
+IN1 -IN2
VEE +IN2
Vin Vi NJM2068_SUB V+
VOFF = 0 VOFF = 0 Vi2 Vin2 Rload2
VAMPL = 0 VAMPL = 0 V- VOFF = 0 VOFF = 0
FREQ = 0 FREQ = 0 VAMPL = 0 VAMPL = 0 10k 15Vdc
AC = 0 AC = 0 FREQ = 0 FREQ = 0
DC = 0 DC = 0 -15Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Measurement Simulation Error
Vos
3 mV 3.0086 mV 0.286 %
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

5. Slew Rate, +SR, -SR
Simulation result
Evaluation circuit
Rload
2k Vout U13
OUT1 VCC
-IN1 OUT2
+IN1 -IN2
V1 = 0 Vi
V2 = 10
TD = 0 VEE +IN2
TR = 10n Vin NJM2068_SUB Vi2 V1 = 0 V+
TF = 10n VOFF = 0 V2 = 14 Rload2
PW = 5u VAMPL = 0 V- Vin2 TD = 0
PER = 500u FREQ = 0 VOFF = 0 TR = 10n 10k 15Vdc
V2 AC = 0 VAMPL = 0 TF = 10n
-3.0086m DC = 0 -15Vdc FREQ = 0 PW = 5u
AC = 0 PER = 500u
DC = 0 V22
-3.0086m
0 0
Data sheet Simulation %Error
Slew Rate(v/us)
6V/us 6.001V/us 0.016
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

6. Input current Ib, Ibos
Simulation result
Evaluation circuit
Rload
2k Vout U12
OUT1 VCC
-IN1 OUT2
+IN1 -IN2
VEE +IN2
Vi Vin NJM2068_SUB Rload2 V+
VOFF = 0 VOFF = -3.0086m Vin2 Vi2
VAMPL = 0 VAMPL = 0 V- VOFF = -3.0086m VOFF = 0
FREQ = 0 FREQ = 0 VAMPL = 0 VAMPL = 0 2k 15Vdc
AC = 0 AC = 0 FREQ = 0 FREQ = 0
DC = 0 DC = 0 -15Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Data sheet Simulation %Error
Ib(nA) 150 150.01 0.006
Ibos(nA) 5 5.07 1.4
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

7. Open Loop Voltage Gain vs. Frequency , Av-dc, f-0dB
Simulation result
Evaluation circuit
Vout U14
OUT1 VCC
-IN1 OUT2
+IN1 -IN2
VEE +IN2
NJM2068_SUB V+
Vin Vi V- Vi2 Vin2
VOFF = 0 VOFF = 0 VOFF = 0 VOFF = 0 15Vdc
VAMPL = 0 VAMPL = 0 VAMPL = 0 VAMPL = 0
FREQ = 0 FREQ = 0 -15Vdc FREQ = 0 FREQ = 0
AC = 1m AC = 0 AC = 0 AC = 1m
DC = -3.0086m DC = 0 DC = 0 DC = -3.0086m
0
Data sheet Simulation %Error
f-0dB(MHz) 5.5 5.53 0.545
Av-dc(dB) 120 119.952 0.04
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

8. Common-Mode Rejection Voltage gain
Simulation result
2.0V
0V
-2.0V
0s 1.0s 2.0s 3.0s 4.0s
V(Vout)
Time
Evaluation circuit
Vout U12
OUT1 VCC
-IN1 OUT2
-3.0086mVdc
V1 +IN1 -IN2
VEE +IN2
NJM2068_SUB V+
DC = 0 DC = 0
V- AC = 0 AC = 0
FREQ = 0 FREQ = 0 15Vdc
V VAMPL = 0 VAMPL = 0
VOFF = 0 -15Vdc VOFF = 0 VOFF = 0
VAMPL = 0.5 Vi2 Vin2
FREQ = 1
AC = 0
DC = 0
0
Common Mode Rejection Ratio=994489/3.298=301543.056
Data sheet Simulation %Error
CMRR
110 109.586 -0.376
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004