This document reports on the performance characteristics of the NJM2904V operational amplifier through various simulation results, including output voltage swing, input offset voltage, slew rate, input currents, and common-mode rejection ratio. The findings detail measurement comparisons against a datasheet, highlighting errors in key performance metrics. All simulations were conducted by Bee Technologies Inc. and are protected by copyright.

1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: NJM2904V
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

2. Spice Model U17
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
NJM2904_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 U19
OUT1 V+
-IN1 OUT2
V1 +IN1 -IN2
0Vdc
V- +IN2
NJM2904_SUB V+
V2 Rload2
V- 0Vdc
10k 5Vdc
0Vdc
0 0
Output Voltage Swing Data sheet Simulation %Error
+Vout(V) +3.5 3.53 0.857
-Vout(V) 0 0 0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

4. Input Offset Voltage
Simulation result
Evaluation circuit
Rload
10k Vout U13
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
Vin Vi NJM2904_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 5Vdc
AC = 0 AC = 0 FREQ = 0 FREQ = 0
DC = 0 DC = 0 0Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Measurement Simulation Error
Vos
7 mV 7.05 mV 0.714 %
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

5. Slew Rate, +SR, -SR
Simulation result
Evaluation circuit
Rload
2k Vout U18
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
Vi V1 = 0
V2 = 10 NJM2904_SUB Vi2 V1 = 0 V+
Vin TD = 0 V2 = 14 Rload2
VOFF = 0 TR = 10n V- Vin2 TD = 0
VAMPL = 0 TF = 10n VOFF = 0 TR = 10n 10k 5Vdc
FREQ = 0 PW = 5u VAMPL = 0 TF = 10n
AC = 0 PER = 500u 0Vdc FREQ = 0 PW = 5u
DC = 0 V2 AC = 0 PER = 500u
-7.05m DC = 0 V22
-7.05m
0 0
Data sheet Simulation %Error
Slew Rate(v/us)
0.5V/us 0.486V/us 2.8
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

6. Input current Ib, Ibos
Simulation result
Evaluation circuit
Rload
2k Vout U17
OUT1 V+
-IN1 OUT2
+IN1 -IN2
VOFF = -7.05m V- +IN2
Vi Vin NJM2904_SUB Rload2 V+
VOFF = 0 Vin2 Vi2
VAMPL = 0 VAMPL = 0 V- VOFF = -7.05m VOFF = 0
FREQ = 0 FREQ = 0 VAMPL = 0 VAMPL = 0 2k 5Vdc
AC = 0 AC = 0 FREQ = 0 FREQ = 0
DC = 0 DC = 0 0Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Data sheet Simulation %Error
Ib(nA) 25 25.05 0.2
Ibos(nA) 5 5.05 1
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 U19
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
NJM2904_SUB V+
Vin Vi V- Vi2 Vin2
VOFF = 0 VOFF = 0 VOFF = 0 VOFF = 0 5Vdc
VAMPL = 0 VAMPL = 0 VAMPL = 0 VAMPL = 0
FREQ = 0 FREQ = 0 0Vdc FREQ = 0 FREQ = 0
AC = 1m AC = 0 AC = 0 AC = 1m
DC = -7.05m DC = 0 DC = 0 DC = -7.05m
0
Data sheet Simulation %Error
f-0dB(MHz) 0.2 0.195 2.5
Av-dc(dB) 100 99.917 0.083
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

8. Output Short Circuit Current - Ios
Simulation result
Evaluation circuit
1nRload Vout U18
OUT1 V+
V6 -IN1 OUT2
+IN1 -IN2 Rload2
0
V- +IN2 1n
NJM2904_SUB V+
V- Vin2
Vin Vi Vi2 V7 5Vdc
VOFF = -7.05m VOFF = 0 VOFF = 0 VOFF = -7.05m
VAMPL = 0 VAMPL = 0 0Vdc VAMPL = 0 VAMPL = 0
FREQ = 0 FREQ = 0 FREQ = 0 FREQ = 0 0
AC = 0 AC = 0 AC = 0 AC = 0
DC = 0 DC = 0 DC = 0 DC = 0
0 0
Data sheet Simulation %Error
Short Circuit Current
1.2mA 1.225mA 2.083
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

9. Common-Mode Rejection Voltage gain
Simulation result
Evaluation circuit
Vout U17
OUT1 V+
-IN1 OUT2
+IN1 -IN2
DC = 0 DC = 0
AC = 0 AC = 0 V- +IN2
FREQ = 0 FREQ = 0 NJM2904_SUB V+
VAMPL = 0 VAMPL = 0 DC = 0 DC = 0
VOFF = 0 VOFF = 0 V- AC = 0 AC = 0
Vin Vi FREQ = 0 FREQ = 0 5Vdc
VAMPL = 0 VAMPL = 0
0Vdc VOFF = 0 VOFF = 0
Vi2 Vin2
V
VOFF = 0
VAMPL = 0.5
FREQ = 1
AC = 0
DC = -7.05m
0
Common mode gain=5.623/1
Common Mode Reject Ratio=99048/5.623=17614
Data sheet Simulation %Error
CMRR
17782 17614 0.944
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004