SPICE MODEL of NJU7031 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: NJU7031
MANUFACTURER: NEW JAPAN RADIO
REMARK TYPE: (CMOS OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. SPICE MODEL
U2
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
VSS 4 5 IN2
NJU7031
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
Simulation result
Simulation
Evaluation Circuit
U4
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
out
VSS 4 5 IN2
NJU7031
V1 V2 V3
4.95 5.05 R1
1MEG 10
0
V1 = (VDD/2) + 0.05, V2 = (VDD/2) - 0.05
Comparison Table
Measurement Simulation %Error
VOM (V) 9.98 9.979 -0.01
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Input Current
Simulation result
Simulation
Evaluation Circuit
U2
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
OUT
VSS 4 5 IN2
NJU7031
V2 V1 V3
0Vdc 0
10
0
Comparison Table
Measurement Simulation % Error
Ib (pA) 1 1.002 0.2
IOS (pA) 1 0.995 -0.5
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. Input Offset Voltage
Simulation result
Simulation
Evaluation Circuit
U3
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
OUT
VSS 4 5 IN2
NJU7031 10
V3
V1
0
0
Comparison Table
Measurement Simulation %Error
VOS (mV) 10 9.953 -0.47
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

7. Open loop Voltage Gain
Simulation result
Simulation
Evaluation Circuit
U12
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
OUT
VSS 4 5 IN2
IN
NJU7031
V3
V1
VOFF = 0
VAMPL = 0 10
FREQ = 0
AC = 1m
DC = -9.953m
0
Comparison Table
Measurement Simulation %Error
Av (dB) 95 95.043 0.045
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

8. Unity Gain Frequency
Simulation result
Simulation
Evaluation Circuit
R1
100k
U2
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
IN OUT
VSS 4 5 IN2
V1 VOFF = 0 NJU7031
R2 VAMPL = 0 V3
FREQ = 0 C1
1k AC = 1m
DC = 53.4m 10p 10
0
Comparison Table
AV=40dB,CL=10pF Measurement Simulation %Error
Ft(MHz) 1.5 1.56 4
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

9. Common-Mode Rejection Ratio
Simulation result
Simulation
ACM= 7.5334/534.021
Evaluation Circuit
U2
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
V2 OUT
-9.953m VSS 4 5 IN2
NJU7031
V3
10
V1 VOFF = 0
VAMPL = 0
FREQ = 0
AC = 0
DC = 0
0
CMRR= AV / ACM
Comparison Table
Measurement Simulation %Error
CMRR (dB) 75 72 -4
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

10. Slew Rate
Simulation result
Simulation
Evaluation Circuit
U2
IN1 1 8 NC
IN- 2 7 VDD
+ -
IN+ 3 6 OUT
OUT
VSS 4 5 IN2
V1 = 0 V1 NJU7031
V2 = 10
TD = 10u V2
TR = 10n
TF = 10n
PW = 100u 10
PER = 500u
0
Comparison Table
Measurement Simulation % Error
SR (V/us) 3.5 3.52 0.571
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005