This document summarizes the key specifications and simulation results for an operational amplifier with part number NJU7043 manufactured by New Japan Radio. It includes 3 sentences on the output voltage swing, input offset voltage, and slew rate based on Spice model simulations and compares the results to measurement data.

1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: NJU7043
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (CMOS OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. Spice Model
U1
OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
NJU7043
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. MOSFET MODEL
Pspice model
Model description
parameter
LEVEL
L Channel Length
W Channel Width
KP Transconductance
RS Source Ohmic Resistance
RD Ohmic Drain Resistance
VTO Zero-bias Threshold Voltage
RDS Drain-Source Shunt Resistance
TOX Gate Oxide Thickness
CGSO Zero-bias Gate-Source Capacitance
CGDO Zero-bias Gate-Drain Capacitance
CBD Zero-bias Bulk-Drain Junction Capacitance
MJ Bulk Junction Grading Coefficient
PB Bulk Junction Potential
FC Bulk Junction Forward-bias Capacitance Coefficient
RG Gate Ohmic Resistance
IS Bulk Junction Saturation Current
N Bulk Junction Emission Coefficient
RB Bulk Series Resistance
PHI Surface Inversion Potential
GAMMA Body-effect Parameter
DELTA Width effect on Threshold Voltage
ETA Static Feedback on Threshold Voltage
THETA Modility Modulation
KAPPA Saturation Field Factor
VMAX Maximum Drift Velocity of Carriers
XJ Metallurgical Junction Depth
UO Surface Mobility
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. Output Voltage Swing (VOH1)
Simulation result
3.0V
Simulation
2.0V
1.0V
0V
0s 0.5s 1.0s
V(VOH)
Time
Evaluation Circuit
U1
VOH OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
V3 NJU7043
R1 V2 1.55 V1
1.45
10k
3
0
Comparison Table
RL=10K Measurement Simulation %Error
VOH1 (V) 2.95 2.9532 0.108
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Output Voltage Swing (VOL1)
Simulation result
3.0V
Simulation
2.0V
1.0V
0V
0s 0.5s 1.0s
V(VOL)
Time
Evaluation Circuit
R2
10k
U2
VOL OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2 V6
V4 V5 NJU7043
3
1.55 1.45
0
Comparison Table
RL=10K Measurement Simulation %Error
VOL1 (V) 0.05 0.049763 -0.474
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. Input Current
Simulation result
3.0pA
Simulation
2.0pA
1.0pA
0A
0s 50s 100s
( I(V1)+I(V2))/2 I(V1)-I(V2)
Time
Evaluation Circuit
U1
out OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
NJU7043 V3
V2 V1
0Vdc 0Vdc 3
0
Comparison Table
Measurement Simulation % Error
Ib (pA) 1 1.0025 0.25
IOS (pA) 1 0.995 -0.5
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

7. Input Offset Voltage
Simulation result
3.0V
Simulation
2.0V
1.0V
0V
-10mV 0V 10mV 20mV
V(OUT)
V_V1
Evaluation Circuit
U1
OUT OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
R1
NJU7043
10k 3 V2
V1
0Vdc
0
Comparison Table
Measurement Simulation %Error
VIO (mV) 10 9.889 -1.110
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

8. Open loop Voltage Gain
Simulation result
100
Simulation
75
50
25
0
1.0Hz 100Hz 10KHz 1.0MHz 100MHz
DB(V(OUT)/V(IN))
Frequency
Evaluation Circuit
U1
OUT OUT1 VDD
IN -IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
V1 VOFF = 0
NJU7043
VAMPL = 0
R1 FREQ = 0 V3
AC = 1m 3
10K DC = -9.889m
0
Comparison Table
Measurement Simulation %Error
Av (dB) 90 86.906 -3.438
Ft (MHz) 0.8 0.786436 -1.696
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

9. Common-Mode Rejection Ratio
Simulation result
Simulation
ACM=1.3821 / 45.000 m
Evaluation Circuit
U1
OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
V2 + -
VSS +IN2
R2 -9.889m V3
NJU7043
10k
V1 3
VOFF = 0
VAMPL = 0.5
FREQ = 1
AC = 1m
DC = 0
0
CMRR = AV/ACM
Comparison Table
Measurement Simulation %Error
CMRR (dB) 60 57.159 -4.734
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

10. Slew Rate
Simulation result
4.0V
OUTPUT
2.0V
0V
0s 50us 100us
V(OUT) V(V3:+)
Time
Evaluation Circuit
U1
OUT OUT1 VDD
-IN1 OUT2
- +
+IN1 -IN2
+ -
VSS +IN2
R1
10k NJU7043
V1 = 0 V3 3 V1
V2 = 3
TD = 10u
TR = 10n
TF = 10n
PW = 50u
PER = 100u
0
Comparison Table
Measurement Simulation %Error
SR (V/us) 0.7 0.6948 -0.743
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005