Version 4
SHEET 1 880 680
WIRE 96 -16 80 -16
WIRE 192 -16 176 -16
WIRE 208 -16 192 -16
WIRE 400 -16 272 -16
WIRE -176 48 -176 32
WIRE -80 48 -80 32
WIRE 192 48 192 -16
WIRE 256 48 192 48
WIRE 400 48 400 -16
WIRE 400 48 336 48
WIRE -176 144 -176 128
WIRE -80 144 -80 128
WIRE 48 144 48 128
WIRE 272 160 272 144
WIRE 192 208 192 48
WIRE 240 208 192 208
WIRE -64 224 -80 224
WIRE 48 224 48 208
WIRE 48 224 16 224
WIRE 96 224 48 224
WIRE 192 224 176 224
WIRE 400 240 400 48
WIRE 400 240 384 240
WIRE 416 240 400 240
WIRE -80 272 -80 224
WIRE -80 272 -208 272
WIRE 192 272 192 224
WIRE 240 272 192 272
WIRE -208 288 -208 272
WIRE -80 320 -80 272
WIRE -48 320 -80 320
WIRE 48 320 16 320
WIRE 96 320 48 320
WIRE 192 320 192 272
WIRE 192 320 160 320
WIRE 48 336 48 320
WIRE 272 352 272 320
WIRE -208 384 -208 368
WIRE 48 432 48 416
FLAG -176 144 0
FLAG -80 144 0
FLAG 272 144 +V
FLAG -176 32 +V
FLAG -80 32 -V
FLAG 272 352 -V
FLAG 80 -16 0
FLAG -208 384 0
FLAG 48 432 0
FLAG 48 128 0
FLAG -208 272 IN
FLAG 416 240 OUT
SYMBOL voltage -176 32 R0
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL voltage -80 32 R0
SYMATTR InstName V2
SYMATTR Value -2.5
SYMBOL cap 272 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 47p
SYMBOL res 192 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL res 352 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL voltage -208 272 R0
SYMATTR InstName V3
SYMATTR Value ac 1
SYMBOL res 32 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 2Meg
SYMBOL res 192 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 2Meg
SYMBOL res 32 432 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 1Meg
SYMBOL cap 16 304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 3.9p
SYMBOL cap 160 304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 3.9p
SYMBOL cap 32 208 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C4
SYMATTR Value 8.2p
SYMBOL LTC6081 272 240 R0
SYMATTR InstName U1
TEXT 384 384 Left 2 !.ac oct 10 1 1Meg