Version 4
SHEET 1 880 680
WIRE 80 64 64 64
WIRE 192 64 160 64
WIRE 224 64 192 64
WIRE 336 64 304 64
WIRE 272 144 256 144
WIRE 256 160 256 144
WIRE 192 176 192 64
WIRE 224 176 192 176
WIRE 336 192 336 64
WIRE 336 192 288 192
WIRE 368 192 336 192
WIRE 224 208 144 208
WIRE 144 224 144 208
WIRE 400 256 384 256
WIRE 384 272 384 256
FLAG 256 224 0
FLAG 256 144 VCC
FLAG 368 192 out
IOPIN 368 192 Out
FLAG 64 64 0
FLAG 144 304 0
FLAG 384 352 0
FLAG 384 256 VCC
FLAG 144 208 in
SYMBOL Opamps\\UniversalOpamp2 256 192 R0
WINDOW 39 -45 73 Left 0
SYMATTR SpiceLine Vos=-5mV
SYMATTR InstName U1
SYMATTR SpiceLine2 ilimit=25m rail=0 phimargin=45 en=0 enk=0 in=0 ink=0 Rin=500Meg
SYMBOL voltage 384 256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5V
SYMBOL voltage 144 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 25mV
SYMBOL res 176 48 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 320 48 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 100k
TEXT 72 360 Left 0 !.dc V1 0V 25mV 100uV