Version 4
SHEET 1 880 680
WIRE 160 -32 -240 -32
WIRE 320 -32 160 -32
WIRE 416 -32 320 -32
WIRE 448 -32 416 -32
WIRE 416 -16 416 -32
WIRE 352 32 336 32
WIRE 448 32 448 -32
WIRE 448 32 432 32
WIRE 48 96 -32 96
WIRE 96 96 48 96
WIRE 192 96 96 96
WIRE 336 96 336 32
WIRE 416 96 416 80
WIRE 416 96 336 96
WIRE 320 128 320 -32
WIRE -240 144 -240 -32
WIRE -240 144 -256 144
WIRE 96 144 96 96
WIRE 192 144 192 96
WIRE 272 144 192 144
WIRE 464 176 400 176
WIRE 496 176 464 176
WIRE -224 192 -256 192
WIRE -208 192 -224 192
WIRE -192 192 -208 192
WIRE -64 192 -112 192
WIRE -32 192 -32 176
WIRE -32 192 -64 192
WIRE 272 208 192 208
WIRE -32 224 -32 192
WIRE 400 224 352 224
WIRE 416 224 416 96
WIRE 416 224 400 224
WIRE 464 224 464 176
WIRE -240 240 -256 240
WIRE 352 240 352 224
WIRE -240 288 -240 240
WIRE -240 320 -240 288
WIRE -32 320 -32 304
WIRE 48 320 -32 320
WIRE 96 320 96 224
WIRE 96 320 48 320
WIRE 192 320 192 208
WIRE 192 320 96 320
WIRE 352 336 352 320
WIRE -208 368 -208 192
WIRE 464 368 464 304
WIRE 464 368 -208 368
FLAG 496 176 AUS
IOPIN 496 176 Out
FLAG -240 320 0
FLAG -64 192 UCOM
FLAG 48 96 DIFP
FLAG 48 320 DIFN
FLAG 160 -32 VDD
FLAG -224 192 UREF
FLAG -240 288 VSS
FLAG 352 336 0
FLAG 400 224 UB
SYMBOL current 352 240 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 34 17 Left 2
WINDOW 3 34 56 Left 2
SYMATTR InstName I1
SYMATTR Value 10µ
SYMBOL voltage 96 128 R0
WINDOW 39 0 0 Left 2
WINDOW 123 31 77 Left 2
WINDOW 3 -104 121 Left 2
WINDOW 0 31 30 Left 2
SYMATTR Value2 AC 1 0
SYMATTR Value 0
SYMATTR InstName VDIF
SYMBOL res -48 80 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res -48 208 R0
WINDOW 0 36 68 Left 2
WINDOW 3 36 88 Left 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL power -320 192 M0
SYMATTR InstName POW
SYMBOL voltage -96 192 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 -31 11 VBottom 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VCOM
SYMATTR Value -1.5
SYMATTR Value2 AC 0 0
SYMBOL OpaCtr 320 176 R0
SYMATTR InstName X1
SYMBOL res 448 208 R0
SYMATTR InstName R3
SYMATTR Value 50K
SYMBOL AMScells\\p4 368 -16 R0
SYMATTR InstName U1
TEXT -152 344 Left 2 !.include C:/Programs/LTspiceIV/lib/sub/AMSlev49.sub
TEXT -56 16 Left 2 !;tran 0 5100m 0
TEXT -208 16 Left 2 !.ac dec 9 1 1G
TEXT 96 16 Left 2 !;dc VDIF -500u 500u 5u
TEXT -208 56 Left 2 !.step temp -20 100 40