Version 4
SHEET 1 896 680
WIRE 32 64 16 64
WIRE 128 64 112 64
WIRE 208 64 128 64
WIRE 336 64 288 64
WIRE 192 144 192 128
WIRE -320 192 -320 176
WIRE 128 192 128 64
WIRE 160 192 128 192
WIRE 336 224 336 64
WIRE 336 224 304 224
WIRE 384 224 336 224
WIRE 160 256 -64 256
WIRE -64 272 -64 256
WIRE -320 288 -320 272
WIRE 256 320 256 304
WIRE 192 352 192 304
WIRE 224 352 224 304
WIRE 224 352 192 352
WIRE 320 352 224 352
WIRE -64 368 -64 352
FLAG -320 288 0
FLAG 192 128 +V
FLAG -320 176 +V
FLAG 16 64 0
FLAG -64 368 0
FLAG 384 224 OUT
FLAG -64 256 IN
FLAG 256 320 0
FLAG 320 352 REF
SYMBOL voltage -320 176 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 304 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res 128 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL voltage -64 256 R0
SYMATTR InstName V3
SYMATTR Value SINE(1.25 .5 1K)
SYMBOL opamps\\LT1635 192 224 R0
SYMATTR InstName U1
TEXT 424 312 Left 2 !.tran 3m