* AD797B SPICE Macro-model 10/92, Rev. A * AAG / PMI * * This version of the AD797 op amp model simulates the worst case * parameters of the 'B' grade. The worst case parameters used * correspond to those in the data sheet. * * Copyright 1992 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 * | | | | | decompensation * | | | | | | .SUBCKT AD797B 1 2 99 50 38 14 * * INPUT STAGE & POLE AT 500 MHz * IOS 1 2 DC 100E-9 CIND 1 2 20E-12 CINC1 1 98 5E-12 GRCM1 1 98 POLY(2) 1 31 2 31 (0,5E-9,5E-9) GN1 0 1 44 0 1E-3 CINC2 2 98 5E-12 GRCM2 2 98 POLY(2) 1 31 2 31 (0,5E-9,5E-9) GN2 0 2 47 0 1E-3 EOS 9 3 POLY(1) 22 31 40E-6 1 EN 3 1 41 0 0.1 D1 2 9 DX D2 9 2 DX Q1 5 2 4 QX Q2 6 9 4 QX R3 97 5 0.5172 R4 97 6 0.5172 C2 5 6 3.0772E-10 I1 4 51 100E-3 EPOS 97 0 99 0 1 ENEG 51 0 50 0 1 * * INPUT VOLTAGE NOISE GENERATOR * VN1 40 0 DC 2 DN1 40 41 DEN DN2 41 42 DEN VN2 0 42 DC 2 * * +INPUT CURRENT NOISE GENERATOR * VN3 43 0 DC 2 DN3 43 44 DIN DN4 44 45 DIN VN4 0 45 DC 2 * * -INPUT CURRENT NOISE GENERATOR * VN5 46 0 DC 2 DN5 46 47 DIN DN6 47 48 DIN VN6 0 48 DC 2 * * GAIN STAGE & DOMINANT POLE AT 55 Hz * EREF 98 0 31 0 1 G1 98 10 5 6 10 R7 10 98 10 E1 99 11 POLY(1) 99 31 -1.209 1 D3 10 11 DX E2 12 50 POLY(1) 31 50 -1.209 1 D4 12 10 DX G2 98 13 10 31 1E-3 R8 13 98 10 G3 99 14 98 13 34.558E-3 G4 99 16 98 98 34.558E-3 G5 14 15 15 14 20E-3 G6 16 17 17 14 20E-3 R9 15 18 400 R10 17 18 400 E3 18 98 16 98 1 R11 16 98 5.7875E7 C5 16 98 50E-12 V1 99 19 DC 4.3208 D5 16 19 DX V2 20 50 DC 4.3208 D6 20 16 DX RDC 14 98 1E15 * * COMMON-MODE GAIN NETWORK WITH ZERO AT 4.3 kHz * ECM 21 98 POLY(2) 1 31 2 31 (0,0.5,0.5) RCM1 21 22 1 CCM 21 22 37.281E-6 RCM2 22 98 1E-6 * * POLE-ZERO PAIR AT 3.9 MHz/10 MHz * GPZ 98 23 16 98 1 RPZ1 23 98 1 RPZ2 23 24 0.63934 CPZ 24 98 24.893E-9 * * NEGATIVE ZERO AT -300 MHz * ENZ 25 98 23 31 1E6 RNZ1 25 26 1 CNZ 25 26 -5.3052E-10 RNZ2 26 98 1E-6 * * POLE AT 300 MHz * GP2 98 27 26 31 1 RP2 27 98 1 CP2 27 98 5.3052E-10 * * POLE AT 500 MHz * GP3 98 28 27 31 1 RP3 28 98 1 CP3 28 98 3.1831E-10 * * POLE AT 500 MHz * GP4 98 29 28 31 1 RP4 29 98 1 CP4 29 98 3.1831E-10 * * OUTPUT STAGE * VW 29 30 DC 0 RDC1 99 31 23.25E3 CDC 31 0 1E-6 RDC2 31 50 23.25E3 GO1 98 32 37 30 25E-3 DO1 32 33 DX VO1 33 98 DC 0 DO2 34 32 DX VO2 98 34 DC 0 FDC 99 50 POLY(2) VO1 VO2 9.86E-3 1 1 VSC1 35 37 0.945 DSC1 30 35 DX VSC2 37 36 0.745 DSC2 36 30 DX FSC1 37 0 VSC1 1 FSC2 0 37 VSC2 1 GO3 37 99 99 30 25E-3 GO4 50 37 30 50 25E-3 RO1 99 37 40 RO2 37 50 40 LO 37 38 10E-9 * * MODELS USED * .MODEL QX NPN(BF=5.5556E4) .MODEL DX D(IS=1E-15) .MODEL DEN D(IS=1E-12 RS=6.3708E3 AF=1 KF=1.59E-15) .MODEL DIN D(IS=1E-12 RS=474 AF=1 KF=7.816E-15) .ENDS AD797B