OP191 Datasheet, PDF (18/20 Pages) Analog Devices – Micropower Single-Supply Rail-to-Rail Input/Output Op Amps

OP191/OP291/OP491
* OP491 SPICE Macro-model
Rev. A, 5/94
*
ARG/ADI
*
* Copyright 1994 by Analog Devices
*
* Refer to “README.DOC” file for License Statement. Use of
* this model indicates your acceptance of the terms and pro-
* visions in the License Statement.
*
* Node assignments
*
noninverting input
*
inverting input
*
positive supply
*
negative supply
*
output
*
.SUBCKT OP491 1 2 99 50 45
*
* INPUT STAGE
*
I1 99 7 8.06E-6
Q1 6 4 7 QP
Q2 5 3 7 QP
D1 3 99 DX
D2 4 99 DX
D3 3 4 DX
D4 4 3 DX
R1 3 8 5E3
R2 4 2 5E3
R3 5 50 6.4654E3
R4 6 50 6.4654E3
EOS 8 1 POLY(1) (16,39) –0.08E-3 1
IOS 3 4 50E-12
GB1 3 98 (21,98) 50E-9
GB2 4 98 (21,98) 50E-9
CIN 1 2 1E-12
*
* 1ST GAIN STAGE
*
EREF 98 0 (39,0) 1
G1 98 9 (6,5) 31.667E-6
R7 9 98 1E6
EC1 99 10 POLY(1) (99,39) –0.52 1
EC2 11 50 POLY(1) (39,50) –0.52 1
D5 9 10 DX
D6 11 9 DX
*
* 2ND GAIN STAGE AND DOMINANT POLE AT 1.25 Hz
*
G2 98 12 (9,39) 8E-6
R8 12 98 276.311E6
C2 12 98 16E-12
D7 12 13 DX
D8 14 12 DX
V1 99 13 0.58
V2 14 50 0.58
*
* COMMON-MODE STAGE
*
ECM 15 98 POLY(2) (1,39) (2,39) 0 0.5 0.5
R9 15 16 1E6
R10 16 98 10
*
* POLE AT 2.5 MHz
*
G3 98 18 (12,39) 1E-6
R11 18 98 1E6
C4 18 98 63.662E-15
*
* BIAS CURRENT-VS-COMMON-MODE VOLTAGE
*
EP 97 0 (99,0) 1
VB 99 17 1.3
RB 17 50 1E9
E3 19 0 (15,17) 16
D13 19 20 DX
R12 20 0 1E6
G4 98 21 (20,0) 1E-3
R13 21 98 5E3
D14 21 22 DY
E4 97 22 (POLY(1) (99,98) -0.765 1
*
* POLE AT 100 MHz
*
G6 98 40 (18,39) 1E-6
R20 40 98 1E6
C10 40 98 1.592E-15
*
* OUTPUT STAGE
*
RS1 99 39 109.375E3
RS2 39 50 109.375E3
RO1 99 45 41.667
RO2 45 50 41.667
G7 45 99 (99,40) 24E-3
G8 50 45 (40,50) 24E-3
G9 98 60 (45,40) 24E-3
D9 60 61 DX
D10 62 60 DX
V7 61 98 DC 0
V8 98 62 DC 0
FSY 99 50 POLY(2) V7 V8 0.207E-3 1 1
D11 41 45 DZ
D12 45 42 DZ
V5 40 41 0.131
V6 42 40 0.131
.MODEL DX D()
.MODEL DY D(IS=1E-9)
.MODEL DZ D(IS=1E-6)
.MODEL QP PNP(BF=66.667)
.ENDS
–18–
REV. 0