STRING OF OPERATIONAL AMPLIFIERS .MODEL MP PNP IS=727.80E-18 BF=4.284E3 NF=0.9943 VAF=22.13 IKF=29.820E-6 + ISE=437.9E-18 NE=1.205 + BR=25.99E3 NR=0.9743 VAR=18.09 IKR=12.8E-6 ISC=17.09E-15 NC=1.021 + RB=618.0 IRB=0.0 RBM=0.00001 RE=4.083 RC=103.3 + XTB=0.0 EG=1.110 XTI=3.0 + CJE=705.106E-15 VJE=1.108 MJE=0.99 + CJS=3.508E-12 VJS=1.893 MJS=1.980E-22 + CJC=1.467E-12 VJC=0.899 MJC=0.99 XCJC=1.0 + FC=0.5 + TF=50.0E-9 XTF=0.0 VTF=0.0 ITF=0.0 TR=50.00E-9 + PTF=0.0 + KF=0.0 AF=1.0 + SUBS=-1 .MODEL MN NPN IS=53.30E-18 BF=235.9 NF=0.9724 VAF=632.9 IKF=10.86E-3 + ISE=1.567E-18 NE=1.046 + BR=0.3272 NR=0.9916 VAR=2.473 IKR=1.388E-3 ISC=1.06E-15 NC=0.9955 + RB=182.2 IRB=0.0 RBM=0.00001 RE=1.876 RC=207.6 + XTB=0.0 EG=1.110 XTI=3.0 + CJE=1.006E-12 VJE=0.4938 MJE=0.1034 + CJC=786.700E-15 VJC=0.3367 MJC=0.1233 XCJC=1.0 + FC=0.5 + TF=150.0E-12 XTF=0.0 VTF=0.0 ITF=0.0 TR=1.50E-9 + PTF=0.0 + KF=0.0 AF=1.0 + CJS=2.488E-12 VJS=0.2636 MJS=0.1262 * .SUBCKT OPAMPAL NON INV OUT VPLUS VMINUS *QNAME C B E S TRANSISTOR TYPE * FIRST STAGE QA VPLUS NON 1 VMINUS MN QB VPLUS INV 2 VMINUS MN * QC 14 14 1 VMINUS MP QD 14 14 1 VMINUS MP QE 14 14 1 VMINUS MP QF 3 14 1 VMINUS MP * QG 4 14 2 VMINUS MP QH 14 14 2 VMINUS MP QI 14 14 2 VMINUS MP QJ 14 14 2 VMINUS MP * CURRENT SOURCES QK 3 3 VMINUS VMINUS MN QL 4 3 VMINUS VMINUS MN * QZA 13 13 VMINUS VMINUS MN QZB 14 13 VMINUS VMINUS MN QZC 16 16 VMINUS VMINUS MN QZD 15 16 VMINUS VMINUS MN * SECOND STAGE QM VPLUS 4 5 VMINUS MN QQ 6 5 VMINUS VMINUS MN QS 15 15 VPLUS VMINUS MP QT 9 15 VPLUS VMINUS MP QU 9 9 8 VMINUS MN QV VPLUS 9 10 VMINUS MN QW 9 7 6 VMINUS MN * THIRD STAGE QNA VPLUS 10 11 VMINUS MN QNB VPLUS 10 11 VMINUS MN QNC VPLUS 10 11 VMINUS MN QND VPLUS 10 11 VMINUS MN QNE VPLUS 10 11 VMINUS MN * QPA VMINUS 6 12 VMINUS MP QPB VMINUS 6 12 VMINUS MP QPC VMINUS 6 12 VMINUS MP QPD VMINUS 6 12 VMINUS MP QPE VMINUS 6 12 VMINUS MP QPF VMINUS 6 12 VMINUS MP QPG VMINUS 6 12 VMINUS MP QPI VMINUS 6 12 VMINUS MP QPJ VMINUS 6 12 VMINUS MP * R1 8 7 33K R2 6 7 50K R3 10 6 83K R4 11 OUT 150 R5 OUT 12 150 R6 VPLUS 13 15MEG R7 VPLUS 16 2.3MEG * C1 6 4 4.3PF * * .ENDS OPAMPAL * .SUBCKT OPAMPMN NON INV OUT VPLUS VMINUS *QNAME C B E S TRANSISTOR TYPE * FIRST STAGE QA VPLUS NON 1 VMINUS MN QB VPLUS INV 2 VMINUS MN * QC 14 14 1 VMINUS MP QD 14 14 1 VMINUS MP QE 14 14 1 VMINUS MP QF 3 14 1 VMINUS MP * QG 4 14 2 VMINUS MP QH 14 14 2 VMINUS MP QI 14 14 2 VMINUS MP QJ 14 14 2 VMINUS MP * CURRENT SOURCES QK 3 3 VMINUS VMINUS MN QL 4 3 VMINUS VMINUS MN * QZA 13 13 VMINUS VMINUS MN QZB 14 13 VMINUS VMINUS MN QZC 16 16 VMINUS VMINUS MN QZD 15 16 VMINUS VMINUS MN * SECOND STAGE QM VPLUS 4 5 VMINUS MN QQ 6 5 VMINUS VMINUS MN QS 15 15 VPLUS VMINUS MP QT 9 15 VPLUS VMINUS MP QU 9 9 8 VMINUS MN QV VPLUS 9 10 VMINUS MN QW 9 7 6 VMINUS MN * THIRD STAGE QNA VPLUS 10 11 VMINUS MN QNB VPLUS 10 11 VMINUS MN QNC VPLUS 10 11 VMINUS MN QND VPLUS 10 11 VMINUS MN QNE VPLUS 10 11 VMINUS MN * QPA VMINUS 6 12 VMINUS MP QPB VMINUS 6 12 VMINUS MP QPC VMINUS 6 12 VMINUS MP QPD VMINUS 6 12 VMINUS MP QPE VMINUS 6 12 VMINUS MP QPF VMINUS 6 12 VMINUS MP QPG VMINUS 6 12 VMINUS MP QPI VMINUS 6 12 VMINUS MP QPJ VMINUS 6 12 VMINUS MP * R1 8 7 33K R2 6 7 50K R3 10 6 83K R4 11 OUT 150 R5 OUT 12 150 R6 VPLUS 13 15MEG R7 VPLUS 16 2.3MEG * C1 6 4 4.3PF * .ENDS OPAMPMN * VH 109 110 0V * * DESCRIBE OPAMPS XA 0 10 11 VPLUS VMINUS OPAMPAL XB 0 12 13 VPLUS VMINUS OPAMPAL XC 0 14 15 VPLUS VMINUS OPAMPAL XD 16 17 17 VPLUS VMINUS OPAMPAL XE 18 19 19 VPLUS VMINUS OPAMPAL XF 0 20 21 VPLUS VMINUS OPAMPAL XG 0 22 23 VPLUS VMINUS OPAMPAL XH 24 25 26 VPLUS VMINUS OPAMPAL XI 0 27 28 VPLUS VMINUS OPAMPAL XJ 33 30 31 VPLUS VMINUS OPAMPAL XK 33 32 34 VPLUS VMINUS OPAMPAL XL 0 35 36 VPLUS VMINUS OPAMPAL * XM 37 38 39 VPLUS VMINUS2 OPAMPMN XN 40 41 42 VPLUS VMINUS2 OPAMPMN * ** DESCRIBE RESISTORS * CHANGE R1 FOR STEP RESPONSE *R1 104 103 0.01 QN1 104 200 103 VMINUS2 MP QN2 104 200 103 VMINUS2 MP QN3 104 200 103 VMINUS2 MP QN4 104 200 103 VMINUS2 MP QN5 104 200 103 VMINUS2 MP QN6 103 200 104 VMINUS2 MN QN7 103 200 104 VMINUS2 MN QN8 103 200 104 VMINUS2 MN QN9 103 200 104 VMINUS2 MN QN10 103 200 104 VMINUS2 MN RCURR 200 201 10K VCURR 201 104 10V ** R2 101 100 1K R3 101 102 600 R4 100 14 100K R5 100 39 100 R6 39 12 100K R7 12 104 100K R8 42 14 100K R9 42 11 100K R10 11 39 100K R11 14 10 100K R12 10 12 100K R13 104 42 100 R14 42 41 100K R15 41 39 100K R16 40 105 100K R17 40 0 75K R18 14 15 10K R19 18 VPLUS 100K R20 18 VMINUS 100K R21 19 22 100K R22 22 23 300K R23 23 27 100K R24 12 13 10K R25 16 VPLUS 100K R26 16 VMINUS 100K R27 108 VPLUS 2000K R28 108 VMINUS 2000K R29 108 20 100K R30 20 21 200K R31 21 27 100K R32 27 28 2000K R33 39 38 100K R34 37 0 100K R35 38 0 300K R37 24 0 100K R38 110 24 100K R39 109 25 100K R40 25 26 100K R41 26 30 100K R42 28 30 100K R43 30 31 100K R44 31 33 10K R45 33 34 10K R46 34 32 100K R47 32 0 100K R48 26 35 100K R49 28 35 100K R50 19 35 100K R51 41 0 300K * ** DESCRIBE CAPACITORS C1 100 102 150NF C2 15 18 100NF C3 13 16 100NF C4 38 31 100NF C5 17 108 800PF * ** VOLTAGE SOURCES VBIAS 105 0 -50V VPOS VPLUS 0 35V VNEG VMINUS 0 -35V VNEG2 VMINUS2 0 -70V *** * .options acct reltol=1e-07 abstol=5e-10 chgtol=5e-15 numdgt = 4 .OP .print DC v(13) v(36) v(39) v(42) .end