* OP-90A SPICE Macro-model 10/92, Rev. C * JCB / PMI * * Revision History: * REV. C * Altered gain stage for proper open-loop gain. * REV. B * Re-ordered subcircuit call out nodes to put the * output node last. * Changed Ios from 3E-9 to 1.5E-9 * * * This version of the OP-90 model simulates the worst case * parameters of the 'A' grade. The worst case parameters * used correspond to those in the data book. * * * Copyright 1990 by Analog Devices, Inc. * * Refer to "README.DOC" file for License Statement. Use of this model * indicates your acceptance with the terms and provisions in the License Statement. * * Node assignments * non-inverting input * | inverting input * | | positive supply * | | | negative supply * | | | | output * | | | | | .SUBCKT OP-90A 1 2 99 50 31 * * INPUT STAGE & POLE AT 10 KHZ * R1 2 3 5E11 R2 1 3 5E11 R3 5 51 61.6E3 R4 6 51 61.6E3 CIN 1 2 4E-12 C2 5 6 129.2E-12 I1 97 4 1E-6 IOS 1 2 1.5E-9 EOS 9 1 POLY(1) 23 27 150E-6 1 Q1 5 2 7 QX Q2 6 9 8 QX R5 7 4 10E3 R6 8 4 10E3 * EREF 98 0 27 0 1 EPLUS 97 0 99 0 1 ENEG 51 0 50 0 1 * * FIRST GAIN STAGE * R7 10 98 1E6 G1 98 10 5 6 101.47E-6 D1 10 11 DX D2 12 10 DX E1 97 11 POLY(1) 97 27 -1.4 1 E2 12 51 POLY(1) 27 51 -1.4 1 * * GAIN STAGE & DOMINANT POLE AT 0.323 HZ * R8 13 98 2.464E6 C3 13 98 200E-9 G2 98 13 10 27 0.5E-3 H2 97 14 POLY(1) VS2 2.2 -3E3 E5 15 51 POLY(2) (17,51) (97,27) 2.0 1.5 -0.405 D3 13 14 DX D4 15 13 DX * * ZERO-IN ZERO-OUT CLAMP * F1 51 17 VS2 -1000 RS1 17 51 1E9 D5 17 51 DX D6 51 17 DX * * NEGATIVE ZERO AT -100 KHZ * R9 19 20 1E6 C4 19 20 -1.59E-12 R10 20 98 1 E3 19 98 13 27 1E6 * * ZERO - POLE PAIR AT 28 KHZ / 100 KHZ * R11 21 22 1E6 L1 22 98 4.09 R12 22 98 2.57E6 G3 98 21 20 27 1E-6 * * COMMON-MODE GAIN NETWORK WITH ZERO AT 126 HZ * R13 23 24 1E6 L2 24 98 1.257E3 G4 98 23 3 27 1E-11 D8 23 97 DX D9 51 23 DX * * ZERO - POLE PAIR AT 40 KHZ / 160 KHZ * R14 25 26 1E6 L3 26 98 2.98 R15 26 98 3E6 G5 98 25 21 27 1E-6 * * OUTPUT STAGE * ISY 99 50 8.444E-6 R16 27 99 2.7E6 R17 27 50 2.7E6 R18 30 99 6000 R19 30 50 6000 VS2 30 31 DC 0 G6 28 50 25 30 166.7E-6 G7 29 50 30 25 166.7E-6 G8 30 99 99 25 166.7E-6 G9 50 30 25 50 166.7E-6 D10 99 28 DX D11 99 29 DX D12 50 28 DY D13 50 29 DY * * MODELS USED * .MODEL QX PNP(BF=33.333) .MODEL DX D(IS=1E-15) .MODEL DY D(IS=1E-15 BV=50) .ENDS OP-90A