Version 4 SHEET 1 892 792 WIRE -64 -96 -64 -112 WIRE 432 -96 432 -112 WIRE 400 -80 160 -80 WIRE 512 -64 464 -64 WIRE 400 -48 368 -48 WIRE 432 -16 432 -32 WIRE -64 16 -64 -16 WIRE 160 16 160 -80 WIRE 160 16 -64 16 WIRE -176 32 -176 0 WIRE 160 32 160 16 WIRE -16 96 -16 80 WIRE 368 96 368 -48 WIRE 400 96 368 96 WIRE 512 96 512 -64 WIRE 512 96 464 96 WIRE 576 96 512 96 WIRE -64 112 -64 16 WIRE -48 112 -64 112 WIRE 160 128 160 112 WIRE 160 128 16 128 WIRE -176 144 -176 112 WIRE -48 144 -176 144 WIRE -416 176 -416 144 WIRE -176 176 -176 144 WIRE -16 176 -16 160 WIRE 368 208 368 96 WIRE 400 208 368 208 WIRE 512 208 512 96 WIRE 512 208 480 208 WIRE 368 240 368 208 WIRE -416 288 -416 256 WIRE -176 288 -176 256 WIRE 256 304 256 288 WIRE 160 320 160 128 WIRE 224 320 160 320 WIRE 336 336 288 336 WIRE 368 336 368 320 WIRE 368 336 336 336 WIRE 224 352 192 352 WIRE 256 384 256 368 WIRE 192 480 192 352 WIRE 224 480 192 480 WIRE 336 480 336 336 WIRE 336 480 288 480 WIRE 192 576 192 480 WIRE 224 576 192 576 WIRE 336 576 336 480 WIRE 336 576 304 576 WIRE 192 640 192 576 WIRE 192 752 192 720 FLAG -416 288 0 FLAG -416 144 V+ FLAG -16 80 V+ FLAG -176 0 V+ FLAG -16 176 0 FLAG 432 -16 V+ FLAG 432 -112 0 FLAG -176 288 0 FLAG -64 -112 V+ FLAG 256 384 V+ FLAG 256 288 0 FLAG 192 752 0 FLAG 576 96 Vout SYMBOL voltage -416 160 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL Misc\\EuropeanResistor -192 16 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL Misc\\EuropeanResistor -192 160 R0 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL Misc\\EuropeanResistor -80 -112 R0 SYMATTR InstName R3 SYMATTR Value 2500 SYMBOL Misc\\EuropeanResistor 144 16 R0 SYMATTR InstName R_PT100 SYMATTR Value R=rpt(100,tpt100) SYMBOL Misc\\EuropeanResistor 496 192 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 14500 SYMBOL Misc\\EuropeanResistor 352 224 R0 SYMATTR InstName R5 SYMATTR Value 200 SYMBOL Misc\\EuropeanResistor 176 624 R0 SYMATTR InstName R7 SYMATTR Value 3810 SYMBOL cap 464 80 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 100n SYMBOL cap 288 464 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 100n SYMBOL Misc\\EuropeanResistor 320 560 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 200 SYMBOL Opamps\\opamp2 -16 64 R0 SYMATTR InstName U1 SYMATTR Value MCP6001 SYMBOL Opamps\\opamp2 432 0 M180 SYMATTR InstName U2 SYMATTR Value MCP6001 SYMBOL Opamps\\opamp2 256 400 M180 WINDOW 3 -66 160 Left 2 SYMATTR Value MCP6001 SYMATTR InstName U3 TEXT -456 352 Left 2 !.lib MCP6001.txt TEXT -456 392 Left 2 !.step param tpt100 -25 105 10 TEXT -352 -32 Center 2 ;-25.5°C - R = 90\n103.95°C - R = 140 TEXT -456 424 Left 2 !.func rpt(r0,ta)=r0*(1+3.85e-3*ta) TEXT -464 464 Left 2 !.op TEXT -464 616 Left 2 !.options reltol=1e-6\n.options cshunt=1e-15\n.options ptrantau=1u\n.options gmin=1e-10 TEXT -464 584 Left 2 ;.option gmin=1e-10 abstol=1e-10 reltol=0.003 TEXT -456 440 Left 2 !.opt tnom=25 temp=25