* OP-497B SPICE Macro-model 4/91, Rev. B * AAG / PMI * * This version of the OP-497 model simulates the worst case * parameters of the 'B' 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-497B 1 2 99 50 32 * * INPUT STAGE & POLE AT 6 MHZ * RIN1 1 7 2500 RIN2 2 8 2500 R1 8 3 1.724E8 R2 7 3 1.724E8 R3 5 99 517.2 R4 6 99 517.2 CIN 7 8 3E-12 C2 5 6 25.644E-12 I1 4 50 0.1E-3 IOS 7 8 75E-12 EOS 9 7 POLY(1) 19 24 75E-6 1 Q1 5 8 4 QX Q2 6 9 4 QX D1 8 9 DX D2 9 8 DX * EREF 98 0 24 0 1 * * 1st GAIN STAGE * G1 98 12 5 6 163.99E-6 R7 12 98 1E6 E1 99 13 POLY(1) 99 24 -2.4 1 D3 12 13 DX E2 14 50 POLY(1) 24 50 -2.4 1 D4 14 12 DX * * 2nd GAIN STAGE & DOMINANT POLE AT 0.29 HZ * G2 98 15 12 24 33.333E-6 R8 15 98 274.41E6 C3 15 98 2E-9 V1 99 16 DC 1.275 D5 15 16 DX V2 17 50 DC 1.275 D6 17 15 DX * * COMMON-MODE GAIN NETWORK WITH ZERO AT 561.01 HZ * ECM 18 98 3 24 1.9953 RCM1 18 19 1E6 CCM 18 19 283.69E-12 RCM2 19 98 1 * * NEGATIVE ZERO AT 1.8 MHz * ENZ 20 98 15 24 1E6 RNZ1 20 21 1E6 CNZ 20 21 -88.419E-15 RNZ2 21 98 1 * * POLE AT 6 MHZ * G3 98 22 21 24 1E-6 R9 22 98 1E6 C4 22 98 26.526E-15 * * POLE AT 1.8 MHZ * G4 98 23 22 24 1E-6 R15 23 98 1E6 C8 23 98 88.419E-15 * * OUTPUT STAGE * R16 24 99 160K R17 24 50 160K ISY 99 50 431E-6 D7 23 28 DX V3 28 27 DC 1.9 D8 29 23 DX V4 27 29 DC 1.9 D9 99 30 DX G5 30 50 23 27 5E-3 D11 50 30 DY D10 99 31 DX G6 31 50 27 23 5E-3 D12 50 31 DY G7 27 99 99 23 5E-3 R18 27 99 200 G8 50 27 23 50 5E-3 R19 27 50 200 L1 27 32 0.1E-6 * * MODELS USED * .MODEL QX NPN(BF=333.333E3) .MODEL DX D(IS=1E-15) .MODEL DY D(IS=1E-15 BV=50) .ENDS OP-497B