* OP-20C SPICE Macro-model 9/91, Rev. A * JCB / PMI * * This version of the OP-20 model simulates the worst case * parameters of the 'C' grade. The worst case parameters * used correspond to those in the data sheet. * * * Copyright 1991 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-20C 1 2 99 50 30 * * INPUT STAGE & POLE AT 1.5 MEGHZ * R1 2 3 5E11 R2 1 3 5E11 R3 5 50 5.16E3 R4 6 50 5.16E3 CIN 1 2 4E-12 C2 5 6 15.42E-12 I1 99 4 10E-6 IOS 1 2 1.25E-9 EOS 9 1 POLY(1) 24 27 500E-6 1 Q1 5 2 4 QX Q2 6 9 4 QX * EREF 98 0 27 0 1 * * FIRST GAIN STAGE * R5 10 98 1E6 G1 98 10 5 6 50.27E-6 D1 10 11 DX D2 12 10 DX E1 99 11 POLY(1) 99 27 -1.475 1 E2 12 50 POLY(1) 27 50 -1.475 1 * * GAIN STAGE & DOMINANT POLE AT 0.25 HZ * R6 13 98 3.18E9 C3 13 98 200E-12 G2 98 13 10 27 5E-6 V1 99 14 0.93 V2 15 50 0.93 D3 13 14 DX D4 15 13 DX * * COMMON-MODE GAIN NETWORK WITH ZERO AT 631 HZ * R7 24 98 1 R8 23 24 1E6 C4 23 24 252E-12 E4 98 23 3 27 19.95 * * POLE AT 600 KHZ * R9 25 98 1E6 C5 25 98 265E-15 G3 98 25 13 27 1E-6 * * OUTPUT STAGE * ISY 99 50 57E-6 R10 27 99 833E3 R11 27 50 833E3 R12 30 99 2000 R13 30 50 2000 G4 28 50 25 30 0.5E-3 G5 29 50 30 25 0.5E-3 G6 30 99 99 25 0.5E-3 G7 50 30 25 50 0.5E-3 D5 99 28 DX D6 99 29 DX D7 50 28 DY D8 50 29 DY D9 25 31 DX V3 31 30 2.4 D10 32 25 DX V4 30 32 0.7 * * MODELS USED * .MODEL QX PNP(BF=166.667) .MODEL DX D(IS=1E-15) .MODEL DY D(IS=1E-15 BV=50) .ENDS OP-20C