Version 4

SHEET 1 880 680

WIRE -448 -96 -448 -128

WIRE 176 -64 144 -64

WIRE 336 -64 256 -64

WIRE -448 32 -448 -16

WIRE -32 64 -160 64

WIRE 144 64 144 -64

WIRE 144 64 48 64

WIRE 208 96 208 80

WIRE -160 112 -160 64

WIRE 144 112 144 64

WIRE 176 112 144 112

WIRE 336 128 336 -64

WIRE 336 128 240 128

WIRE 416 128 336 128

WIRE 176 144 144 144

WIRE 336 160 336 128

WIRE -448 176 -448 144

WIRE -320 176 -320 144

WIRE 208 176 208 160

WIRE -48 192 -160 192

WIRE 144 192 144 144

WIRE 144 192 32 192

WIRE 144 256 144 192

WIRE 336 272 336 240

WIRE -448 288 -448 256

WIRE -320 288 -320 256

WIRE 144 416 144 336

FLAG 144 416 0

FLAG -320 288 0

FLAG 416 128 Vout

FLAG 208 80 ref+

FLAG -320 144 ref+

FLAG -448 32 0

FLAG -448 -128 vin+

FLAG -448 288 0

FLAG -448 144 ref-

FLAG -160 192 vin+

FLAG -160 112 0

FLAG 208 176 0

FLAG 336 272 0

SYMBOL Opamps\\UniversalOpamp2 208 128 R0

SYMATTR InstName U1

SYMBOL res 64 48 R90

WINDOW 0 0 56 VBottom 2

WINDOW 3 32 56 VTop 2

SYMATTR InstName R1

SYMATTR Value 1k

SYMBOL res 48 176 R90

WINDOW 0 0 56 VBottom 2

WINDOW 3 32 56 VTop 2

SYMATTR InstName R2

SYMATTR Value 1k

SYMBOL res 272 -80 R90

WINDOW 0 0 56 VBottom 2

WINDOW 3 32 56 VTop 2

SYMATTR InstName R3

SYMATTR Value 10k

SYMBOL res 128 240 R0

SYMATTR InstName R4

SYMATTR Value 10k

SYMBOL voltage -320 160 R0

WINDOW 123 0 0 Left 2

WINDOW 39 0 0 Left 2

SYMATTR InstName Ref+

SYMATTR Value 3

SYMBOL voltage -448 -112 R0

WINDOW 123 0 0 Left 2

WINDOW 39 0 0 Left 2

SYMATTR InstName Vin-

SYMATTR Value SINE(120m 120m 100 0 0 0 10)

SYMBOL voltage -448 160 R0

WINDOW 123 0 0 Left 2

WINDOW 39 0 0 Left 2

SYMATTR InstName Ref-

SYMATTR Value -3

SYMBOL res 320 144 R0

SYMATTR InstName R5

SYMATTR Value 10k

TEXT -480 440 Left 2 !.tran 0 50ms 0 1ms