This document summarizes the results of simulations performed to characterize the performance of an operational amplifier (opamp) with part number NJM14558R from manufacturer New Japan Radio. The simulations analyzed key specifications such as output voltage swing, input offset voltage, slew rate, input bias current, open loop gain, output short circuit current, and common mode rejection ratio and compared the results to values listed in the amplifier's datasheet. The simulation results were all within 1% of the datasheet specifications.

1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: NJM14558R
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

2. Spice Model
U16
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
NJM14558_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 U16
OUT1 V+
-IN1 OUT2
V1 +IN1 -IN2
0Vdc
V- +IN2
V+
NJM14558_SUB V2 Rload2
V- 0Vdc
10k 5Vdc
-5Vdc
0 0
Output Voltage Swing Data sheet Simulation %Error
+Vout(V) +4 4.004 0.1
-Vout(V) -3.5 3.502 0.057
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

4. Input Offset Voltage
Simulation result
Evaluation circuit
Rload
10k Vout U11
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
Vin Vi V+
NJM14558_SUB
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 -5Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Measurement Simulation Error
Vos
3 mV 3.0224 mV 0.746 %
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

5. Slew Rate, +SR, -SR
Simulation result
Evaluation circuit
Rload
2k Vout U16
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V1 = 0 Vi
V2 = 10
TD = 0 V- +IN2
TR = 10n Vin Vi2 V1 = 0 V+
NJM14558_SUB
TF = 10n VOFF = 0 V2 = 14 Rload2
PW = 5u VAMPL = 0 V- Vin2 TD = 0
PER = 500u FREQ = 0 VOFF = 0 TR = 10n 10k 5Vdc
V2 AC = 0 VAMPL = 0 TF = 10n
-3.0224m DC = 0 -5Vdc FREQ = 0 PW = 5u
AC = 0 PER = 500u
DC = 0 V22
-3.0224m
0 0
Data sheet Simulation %Error
Slew Rate(v/us)
2.5V/us 2.509V/us 0.36
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

6. Input current Ib, Ibos
Simulation result
Evaluation circuit
Rload
2k Vout U15
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
Vi Vin Rload2 V+
NJM14558_SUB
VOFF = 0 VOFF = -3.0224m Vin2 Vi2
VAMPL = 0 VAMPL = 0 V- VOFF = -3.0224m VOFF = 0
FREQ = 0 FREQ = 0 VAMPL = 0 VAMPL = 0 2k 5Vdc
AC = 0 AC = 0 FREQ = 0 FREQ = 0
DC = 0 DC = 0 -5Vdc AC = 0 AC = 0
DC = 0 DC = 0
0 0
Data sheet Simulation %Error
Ib(nA) 70 69.96 0.442
Ibos(nA) 5 5.005 0.1
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 U16
OUT1 V+
-IN1 OUT2
+IN1 -IN2
V- +IN2
V+
NJM14558_SUB
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 -5Vdc FREQ = 0 FREQ = 0
AC = 1m AC = 0 AC = 0 AC = 1m
DC = -3.0224m DC = 0 DC = 0 DC = -3.0224m
0
Data sheet Simulation %Error
f-0dB(MHz) 5 5.01 0.2
Av-dc(dB) 100 100.01 0.1
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

8. Output Short Circuit Current - Ios
Simulation result
Evaluation circuit
1nRload Vout U16
OUT1 V+
V6 -IN1 OUT2
+IN1 -IN2 Rload2
0
V- +IN2 1n
V+
NJM14558_SUB
V- Vin2
Vin Vi Vi2 V7 5Vdc
VOFF = -3.0224m VOFF = 0 VOFF = 0 VOFF = -3.0224m
VAMPL = 0 VAMPL = 0 -5Vdc 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
2.7mA 2.704mA 0.148
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

9. Common-Mode Rejection Voltage gain
Simulation result
Evaluation circuit
Vout U15
OUT1 V+
-IN1 OUT2
+IN1 -IN2
DC = 0 DC = 0
AC = 0 AC = 0 V- +IN2
FREQ = 0 FREQ = 0 V+
NJM14558_SUB
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
-5Vdc VOFF = 0 VOFF = 0
Vi2 Vin2
V
VOFF = 0
VAMPL = 0.5
FREQ = 1
AC = 0
DC = -3.0224m
0
Common mode gain=3.162/1
Common Mode Reject Ratio=100115/3.162=31661
Data sheet Simulation %Error
CMRR
31622 31661 0.123
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004