OP497 Datasheet, PDF (11/12 Pages) Analog Devices – Precision Picoampere Input Current Quad Operational Amplifier

Table I. OP497 SPICE Net-List
* Node assignments
*
noninverting input
*
inverting input
*
positive supply
*
negative supply
*
output
*
*SUBCKT OP497 1 2 99 50 27
*
* INPUT STAGE AND POLE AT 6 MHz
*
RIN1 1 7 2500
RIN2 2 8 2500
R1 8 3 6.782E8
R2 7 3 6.782E8
R3 5 99 542.57
R4 6 99 542.57
CIN 7 8 3E-12
C2 5 6 24.445E-12
I1 4 50 0.1E-3
IOS 7 8 15E-12
EOS 9 7 POLY(1) 16 21 40E-6
1
Q1 5 8 10 QX
Q2 6 9 11 QX
R5 10 4 25.374
R6 11 4 25.374
D1 8 9 DX
D2 9 8 DX
*
EREF 98 0 21 0 1
*
*GAIN STAGE AND DOMINANT POLE AT 0.11 Hz
*
R7 1 98 2.1703E9
C3 2 98 666.67E-12
G1 98 12 5
V1 99 13 1.275
V2 11 9 1.275
D3 12 13 DX
D4 14 12 DX
*
*COMMON-MODE GAIN NETWORK WITH ZERO AT 50 MHz
*
RCM1 15 16 1E6
CCM 15 16 3.18E-9
RCM2 16 98 1
ECM 15 98 3 21 177.83E-3
* NEGATIVE ZERO AT 1.8 MHz
*
E1 17 98 12 21 1E6
R8 17 18 1E6
C4 17 18 –88.419E-15
R9 18 98 1
*
* POLE AT 6 MHz
*
G2 98 19 18 21 1E-6
R15 20 98 1E6
C8 20 98 26.526E-15
*
* POLE AT 1.8 MHz
*
G6 98 20 19 21 1E-6
R20 20 98 1E6
C10 20 98 88.419E-15
*
* OUTPUT STAGE
*
R16 99 21 160 k
R17 21 50 160 k
ISY 99 50 331E-6
V3 23 22 1.9
D5 20 23 DX
V4 22 24 1.9
D6 24 20 DX
D7 99 25 DX
G4 25 50 20 22 5E-3
D9 50 25 DY
D8 99 26 DX
G5 26 50 22 20 5E-3
D10 50 26 DY
G6 22 99 99 20 5E-3
R18 99 22 200
G7 50 22 20 50 5E-3
R19 22 50 200
L1 22 27 0.1E-6
*
* MODELS USED
*
.MODEL QX NPN (BF = 1.25E6)
.MODEL DX (IS = 1E-15)
.MODEL DZ D(IS = 1E-15 BV = 50)
.ENDS OP497
OP497
REV. D
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