Version 4 SHEET 1 2816 1824 WIRE -656 -48 -704 -48 WIRE -544 -48 -576 -48 WIRE 32 -48 -544 -48 WIRE 480 -48 128 -48 WIRE 656 -48 560 -48 WIRE 672 -48 656 -48 WIRE 768 -48 672 -48 WIRE 832 -48 768 -48 WIRE 1184 -48 912 -48 WIRE 1184 32 1184 -48 WIRE -224 48 -272 48 WIRE -80 48 -160 48 WIRE -544 64 -544 -48 WIRE 224 96 192 96 WIRE 336 96 304 96 WIRE 352 96 336 96 WIRE 480 96 480 -48 WIRE 480 96 432 96 WIRE 1456 96 1456 64 WIRE 1600 96 1456 96 WIRE 192 112 192 96 WIRE 1600 112 1600 96 WIRE 304 128 272 128 WIRE -192 144 -192 128 WIRE -272 160 -272 48 WIRE -224 160 -272 160 WIRE 272 160 272 128 WIRE 656 160 656 -48 WIRE -80 176 -80 48 WIRE -80 176 -160 176 WIRE -64 176 -80 176 WIRE 64 176 16 176 WIRE 112 176 112 0 WIRE 112 176 64 176 WIRE 336 176 336 96 WIRE 336 176 304 176 WIRE 768 176 768 -48 WIRE -544 192 -544 144 WIRE -480 192 -544 192 WIRE -416 192 -480 192 WIRE -224 192 -416 192 WIRE 240 192 208 192 WIRE 1456 192 1456 96 WIRE 336 208 304 208 WIRE -192 224 -192 208 WIRE -880 240 -880 128 WIRE 272 240 272 224 WIRE -704 256 -704 -48 WIRE -544 256 -544 192 WIRE -416 272 -416 192 WIRE -272 304 -272 160 WIRE 208 304 208 192 WIRE 208 304 -272 304 WIRE 224 304 208 304 WIRE 336 304 336 208 WIRE 336 304 304 304 WIRE 352 304 336 304 WIRE 560 304 560 -48 WIRE 560 304 432 304 WIRE 1456 304 1456 272 WIRE 1600 304 1600 192 WIRE 1600 304 1456 304 WIRE 1456 336 1456 304 WIRE -880 384 -880 320 WIRE -704 384 -704 336 WIRE -704 384 -880 384 WIRE -544 384 -544 336 WIRE -544 384 -704 384 WIRE -416 384 -416 336 WIRE -416 384 -544 384 WIRE 656 384 656 240 WIRE 656 384 -416 384 WIRE 768 384 768 240 WIRE 768 384 656 384 WIRE 1184 384 1184 112 WIRE 1184 384 768 384 WIRE -704 432 -704 384 FLAG 192 112 0 FLAG -704 432 0 FLAG -880 128 v+ FLAG 272 240 v+ FLAG -192 128 v+ FLAG -480 192 Vsoll FLAG 64 176 gate FLAG 672 -48 U-out FLAG -192 224 0 FLAG 304 128 0 FLAG -544 -48 U-in FLAG 1456 336 0 FLAG 1456 64 last SYMBOL voltage -704 240 R0 WINDOW 3 29 89 Left 0 WINDOW 123 24 44 Left 0 WINDOW 39 24 44 Left 0 SYMATTR Value 14 SYMATTR InstName V1 SYMBOL nmos 32 0 R270 SYMATTR InstName M1 SYMATTR Value IRF1310 SYMBOL res 464 -32 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R1 SYMATTR Value 50m SYMBOL res 448 80 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL res 448 288 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL res 320 288 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL voltage -880 224 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 22 94 Left 0 SYMATTR Value 24 SYMATTR InstName V2 SYMBOL res 32 160 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R4 SYMATTR Value 47 SYMBOL res 208 112 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL cap -160 32 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C4 SYMATTR Value 100p SYMBOL cap -432 272 R0 WINDOW 3 21 48 Left 0 SYMATTR Value 470n SYMATTR InstName C2 SYMBOL res -560 240 R0 SYMATTR InstName R8 SYMATTR Value 4k SYMBOL res -560 48 R0 SYMATTR InstName R10 SYMATTR Value 10k SYMBOL res 1168 16 R0 SYMATTR InstName R9 SYMATTR Value R=V(last) SYMBOL res 640 144 R0 SYMATTR InstName R12 SYMATTR Value 1000 SYMBOL cap 752 176 R0 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL res -672 -64 M90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName I-in SYMATTR Value 0.000001 SYMBOL res 816 -32 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName I-out SYMATTR Value 0.000001 SYMBOL voltage 1456 176 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 24 44 Left 0 SYMATTR Value PWL(0 10 0.1 10 0.15 2 0.2 2 0.3 1 0.4 1 0.5 2 0.6 2 0.7 0.001 0.8 0.001 0.9 2 1 100) SYMATTR InstName V3 SYMBOL res 1584 96 R0 SYMATTR InstName R11 SYMATTR Value 1 SYMBOL Opamps\\opamp2 -192 112 R0 SYMATTR InstName U3 SYMATTR Value LM348 SYMBOL Opamps\\opamp2 272 256 R180 SYMATTR InstName U4 SYMATTR Value LM348 TEXT -880 -8 Left 0 !.tran 1 TEXT -808 576 Left 0 !* LM348 OPERATIONAL AMPLIFIER "MACROMODEL" SUBCIRCUIT\n* CREATED USING PARTS RELEASE 4.01 ON 09/14/89 AT 15:56\n* (REV N/A) SUPPLY VOLTAGE: +/-15V\n* CONNECTIONS: NON-INVERTING INPUT\n* | INVERTING INPUT\n* | | POSITIVE POWER SUPPLY\n* | | | NEGATIVE POWER SUPPLY\n* | | | | OUTPUT\n* | | | | |\n.SUBCKT LM348 1 2 3 4 5\n*\n C1 11 12 9.461E-12\n C2 6 7 30.00E-12\n DC 5 53 DX\n DE 54 5 DX\n DLP 90 91 DX\n DLN 92 90 DX\n DP 4 3 DX\n EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5\n FB 7 99 POLY(5) VB VC VE VLP VLN 0 4.715E6 -5E6 5E6 5E6 -5E6\n GA 6 0 11 12 256.2E-6\n GCM 0 6 10 99 4.023E-9\n IEE 10 4 DC 15.06E-6\n HLIM 90 0 VLIM 1K\n Q1 11 2 13 QX\n Q2 12 1 14 QX\n R2 6 9 100.0E3\n RC1 3 11 4.420E3\n RC2 3 12 4.420E3\n RE1 13 10 968\n RE2 14 10 968\n REE 10 99 13.28E6\n RO1 8 5 150\n RO2 7 99 150\n RP 3 4 51.28E3\n VB 9 0 DC 0\n VC 3 53 DC 3.600\n VE 54 4 DC 3.600\n VLIM 7 8 DC 0\n VLP 91 0 DC 25\n VLN 0 92 DC 25\n.MODEL DX D(IS=800.0E-18)\n.MODEL QX NPN(IS=800.0E-18 BF=250)\n.ENDS