Version 4
SHEET 1 1864 680
WIRE 368 -144 256 -144
WIRE 256 -96 256 -144
WIRE 272 -96 256 -96
WIRE 368 -80 368 -144
WIRE 368 -80 336 -80
WIRE 416 -80 368 -80
WIRE -16 -64 -224 -64
WIRE 96 -64 64 -64
WIRE 144 -64 96 -64
WIRE 224 -64 144 -64
WIRE 272 -64 224 -64
WIRE 96 -48 96 -64
WIRE 64 16 -32 16
WIRE 96 16 64 16
WIRE 144 64 144 -64
WIRE 176 64 144 64
WIRE 256 80 240 80
WIRE 64 96 64 80
WIRE 64 96 48 96
WIRE 96 96 64 96
WIRE 176 96 96 96
WIRE -32 112 -32 16
WIRE -16 112 -32 112
WIRE 64 128 48 128
WIRE 256 176 256 80
WIRE 256 176 96 176
WIRE 64 256 64 128
WIRE 96 256 64 256
FLAG -224 16 0
FLAG 96 320 0
FLAG -208 288 0
FLAG -112 288 0
FLAG -112 208 D
IOPIN -112 208 BiDir
FLAG -208 208 V
IOPIN -208 208 BiDir
FLAG 208 112 V
IOPIN 208 112 BiDir
FLAG 16 80 V
IOPIN 16 80 BiDir
FLAG 16 144 D
IOPIN 16 144 BiDir
FLAG 208 48 D
IOPIN 208 48 BiDir
FLAG 304 -112 V
IOPIN 304 -112 BiDir
FLAG 304 -48 D
IOPIN 304 -48 BiDir
FLAG 416 -80 out
IOPIN 416 -80 Out
FLAG 224 0 0
SYMBOL voltage -224 -80 R0
WINDOW 123 41 68 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 40 96 Left 2
WINDOW 3 40 39 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(0 1 1k)
SYMBOL res 80 0 R0
WINDOW 0 24 35 Left 2
WINDOW 3 13 68 Left 2
SYMATTR InstName R6
SYMATTR Value 1.8k
SYMBOL res 80 160 R0
WINDOW 0 29 41 Left 2
WINDOW 3 29 71 Left 2
SYMATTR InstName R2
SYMATTR Value 1.8k
SYMBOL cap 80 256 R0
WINDOW 0 38 13 Left 2
WINDOW 3 31 45 Left 2
SYMATTR InstName C2
SYMATTR Value 1800p
SYMBOL res 80 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1.8k
SYMBOL voltage -208 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -112 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -5
SYMBOL Opamps\\LT1128 304 -144 R0
SYMATTR InstName U3
SYMBOL res 80 80 R0
WINDOW 0 25 38 Left 2
WINDOW 3 23 69 Left 2
SYMATTR InstName R5
SYMATTR Value 1.8k
SYMBOL cap 80 -48 R0
WINDOW 0 3 8 Left 2
WINDOW 3 -19 44 Left 2
SYMATTR InstName C3
SYMATTR Value 1800p
SYMBOL cap 208 -64 R0
WINDOW 0 -28 14 Left 2
WINDOW 3 -35 41 Left 2
SYMATTR InstName C1
SYMATTR Value 1800p
SYMBOL cap 48 16 R0
WINDOW 0 -12 16 Left 2
WINDOW 3 -13 53 Left 2
SYMATTR InstName C4
SYMATTR Value 22p
SYMBOL Opamps\\LT1797 16 48 M0
SYMATTR InstName U2
SYMBOL Opamps\\LT1797 208 144 M180
SYMATTR InstName U1
TEXT -240 -120 Left 2 !.ac oct 100 10 1Meg