Version 4
SHEET 1 880 680
WIRE 32 -48 0 -48
WIRE 144 -48 112 -48
WIRE 176 -48 144 -48
WIRE 288 -48 256 -48
WIRE 144 32 144 -48
WIRE 176 32 144 32
WIRE 288 48 288 -48
WIRE 288 48 240 48
WIRE 336 48 288 48
WIRE 480 48 464 48
WIRE 576 48 560 48
WIRE 176 64 144 64
WIRE 464 64 464 48
WIRE 560 64 560 48
WIRE 32 144 0 144
WIRE 144 144 144 64
WIRE 144 144 112 144
WIRE 176 144 144 144
WIRE 288 144 256 144
FLAG 464 144 0
FLAG 560 144 0
FLAG 464 48 in
FLAG 560 48 ref
FLAG 0 144 in
IOPIN 0 144 In
FLAG 288 144 ref
IOPIN 288 144 In
FLAG 0 -48 0
FLAG 336 48 out
IOPIN 336 48 Out
FLAG 144 144 niv
SYMBOL voltage 464 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 0V
SYMBOL Opamps\\opamp 208 -16 R0
SYMATTR InstName U1
SYMBOL res 128 128 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 272 128 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 128 -64 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 272 -64 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL voltage 560 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2.5V
TEXT 328 224 Left 0 !.lib opamp.sub
TEXT 328 248 Left 0 !.dc V1 -2V 2V 1mV