Version 4
SHEET 1 2388 912
WIRE 1296 -336 1216 -336
WIRE 1504 -288 1504 -304
WIRE 1568 -288 1504 -288
WIRE 1648 -288 1568 -288
WIRE 1216 -256 1216 -336
WIRE 1568 -256 1568 -288
WIRE 1648 -256 1648 -288
WIRE 624 -240 624 -272
WIRE 624 -240 48 -240
WIRE 1296 -224 1296 -336
WIRE 624 -192 624 -240
WIRE 1568 -176 1568 -192
WIRE 1648 -176 1648 -192
WIRE 1648 -176 1568 -176
WIRE 1504 -160 1504 -288
WIRE 1568 -160 1568 -176
WIRE 1056 -128 912 -128
WIRE 1216 -128 1216 -192
WIRE 1216 -128 1136 -128
WIRE 1440 -128 1216 -128
WIRE 1440 -96 1344 -96
WIRE 624 -80 624 -112
WIRE 656 -80 624 -80
WIRE 1344 -80 1344 -96
WIRE 1216 -64 1216 -128
WIRE 624 -48 624 -80
WIRE 1728 -32 1632 -32
WIRE 48 0 48 -240
WIRE 1728 16 1728 -32
WIRE 1344 32 1344 0
WIRE 1440 32 1344 32
WIRE 336 48 304 48
WIRE 624 64 624 32
WIRE 656 64 624 64
WIRE 1056 64 912 64
WIRE 1216 64 1216 0
WIRE 1216 64 1136 64
WIRE 1440 64 1216 64
WIRE 336 80 336 48
WIRE 624 112 624 64
WIRE 304 128 304 48
WIRE 1216 128 1216 64
WIRE 48 144 48 80
WIRE 272 144 48 144
WIRE 416 160 336 160
WIRE 448 160 416 160
WIRE 560 160 528 160
WIRE 1504 160 1504 96
WIRE 1568 160 1568 48
WIRE 1728 160 1728 96
WIRE 272 176 224 176
WIRE 416 192 416 160
WIRE 48 208 48 144
WIRE 304 208 304 192
WIRE 1216 240 1216 192
WIRE 224 320 224 176
WIRE 416 320 416 256
WIRE 416 320 224 320
WIRE 480 320 416 320
WIRE 624 320 624 208
WIRE 624 320 560 320
WIRE 624 352 624 320
WIRE 1120 448 1040 448
WIRE 1216 448 1216 432
WIRE 1216 448 1120 448
WIRE 1216 464 1216 448
WIRE 48 480 48 288
WIRE 624 480 624 432
WIRE 1040 480 1040 448
WIRE 1120 480 1120 448
WIRE 1040 576 1040 544
WIRE 1120 576 1120 544
WIRE 1120 576 1040 576
WIRE 1216 576 1216 544
WIRE 1216 576 1120 576
WIRE 1216 608 1216 576
FLAG 624 480 0
FLAG 48 480 0
FLAG 1216 608 0
FLAG 1216 432 5V
IOPIN 1216 432 Out
FLAG 656 64 Vout-
IOPIN 656 64 BiDir
FLAG 304 208 5V
IOPIN 304 208 Out
FLAG 624 -272 5V
IOPIN 624 -272 Out
FLAG 336 80 0
FLAG 656 -80 Vout+
IOPIN 656 -80 BiDir
FLAG 912 -128 Vout+
IOPIN 912 -128 BiDir
FLAG 912 64 Vout-
IOPIN 912 64 BiDir
FLAG 1568 -160 0
FLAG 1504 160 0
FLAG 1728 160 0
FLAG 1568 160 0
FLAG 1216 240 0
FLAG 1296 -224 0
FLAG 1504 -304 5V
IOPIN 1504 -304 Out
FLAG 1728 -32 out
SYMBOL npn 560 112 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL res 544 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3.3k
SYMBOL res 576 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 608 336 R0
SYMATTR InstName R3
SYMATTR Value 1240
SYMBOL res 608 -64 R0
SYMATTR InstName R_PT100
SYMATTR Value {RT}
SYMBOL cap 400 192 R0
SYMATTR InstName C1
SYMATTR Value 2.2n
SYMBOL res 32 -16 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 32 192 R0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL voltage 1216 448 R0
WINDOW 123 0 0 Left 2
WINDOW 39 44 82 Left 2
WINDOW 3 42 51 Left 2
SYMATTR Value 5
SYMATTR InstName V1
SYMBOL res 608 -208 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL cap 1552 -256 R0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL cap 1632 -256 R0
SYMATTR InstName C3
SYMATTR Value 10µ
SYMBOL res 1712 0 R0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res 1328 -96 R0
SYMATTR InstName R8
SYMATTR Value 100k
SYMBOL cap 1024 480 R0
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL cap 1104 480 R0
SYMATTR InstName C5
SYMATTR Value 10µ
SYMBOL ad623 1488 -32 R0
SYMATTR InstName U2
SYMATTR SpiceModel AD623
SYMBOL res 1152 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 4.02k
SYMBOL res 1152 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 4.02k
SYMBOL cap 1200 -64 R0
SYMATTR InstName C6
SYMATTR Value 47n
SYMBOL cap 1200 -256 R0
SYMATTR InstName C7
SYMATTR Value 1n
SYMBOL cap 1200 128 R0
SYMATTR InstName C8
SYMATTR Value 1n
SYMBOL Opamps\\UniversalOpamp2 304 160 M180
WINDOW 123 -148 156 Left 2
WINDOW 40 -144 126 Left 2
SYMATTR Value2 Avol=1Meg GBW=0.3Meg Slew=0.1Meg
SYMATTR SpiceLine2 en=52n enk=100 in=0 ink=0 Rin=10G
SYMATTR InstName U3
SYMATTR SpiceModel level.3a
TEXT 80 632 Left 2 ;.tran 0 5m 0 1u
TEXT 80 664 Left 2 ;.step temp 15 30 1
TEXT 80 696 Left 2 !.inc ad623.cir
TEXT 80 728 Left 2 ;.inc MCP6231.txt
TEXT 400 704 Left 2 !.options gmin=1e-10
TEXT 400 672 Left 2 !.options cshunt=1e-14
TEXT 400 736 Left 2 !.options ptrantau=1u
TEXT 1408 -408 Left 2 ;V = 1+100kOhm/Rg
TEXT 80 560 Left 2 ;Use the Alternate solver.\nTools -> Control Panel -> SPICE Solver:Alternate
TEXT 80 832 Left 2 !.param RT=100*(1+3.851e-3*TMP)
TEXT 80 864 Left 2 !.param TMP=0
TEXT 80 800 Left 2 !.op
TEXT 80 896 Left 2 !.step param TMP 15 30 1
TEXT 248 -64 Left 2 ;UniversalOpamp2\nlevel3a