Version 4
SHEET 1 1384 772
WIRE 128 -288 -176 -288
WIRE 368 -288 128 -288
WIRE -176 -272 -176 -288
WIRE 128 -272 128 -288
WIRE -176 -176 -176 -192
WIRE -96 -176 -176 -176
WIRE -176 -160 -176 -176
WIRE 128 -160 128 -208
WIRE -176 -64 -176 -80
WIRE -96 -64 -96 -112
WIRE -96 -64 -176 -64
WIRE -80 -64 -96 -64
WIRE 16 -64 0 -64
WIRE 32 -64 16 -64
WIRE 128 -64 128 -80
WIRE 128 -64 112 -64
WIRE -176 -48 -176 -64
WIRE 128 -48 128 -64
WIRE -96 -16 -96 -64
WIRE -176 48 -176 32
WIRE -96 48 -176 48
WIRE -176 64 -176 48
WIRE 16 64 16 -64
WIRE 256 64 16 64
WIRE 128 80 128 32
WIRE 368 80 368 -288
WIRE 368 80 320 80
WIRE 432 80 368 80
WIRE 256 96 240 96
WIRE 240 144 240 96
WIRE -176 160 -176 144
WIRE -176 160 -400 160
WIRE 128 160 128 144
WIRE 128 160 -176 160
WIRE -400 224 -400 160
WIRE -400 336 -400 304
FLAG -400 336 0
FLAG 240 144 0
FLAG 432 80 out
IOPIN 432 80 Out
SYMBOL Opamps\\opamp 288 16 R0
SYMATTR InstName U1
SYMBOL voltage -400 208 R0
WINDOW 3 24 160 Left 0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(0 1 1000)
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMBOL res -192 -288 R0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL cap 112 -272 R0
SYMATTR InstName C6
SYMATTR Value 3n3
SYMBOL res -160 -176 M0
SYMATTR InstName R1
SYMATTR Value {1 + (w*100k)}
SYMBOL res -160 -64 M0
SYMATTR InstName 50k
SYMATTR Value {1 + ((1-w)*100k)}
SYMBOL res -192 48 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 112 -176 R0
SYMATTR InstName R2
SYMATTR Value {1 + (w*100k)}
SYMBOL res 112 -64 R0
SYMATTR InstName R4
SYMATTR Value {1 + ((1-w)*100k)}
SYMBOL cap 112 80 R0
SYMATTR InstName C1
SYMATTR Value 3n3
SYMBOL cap -112 -176 R0
SYMATTR InstName C2
SYMATTR Value 33n
SYMBOL cap -112 -16 R0
SYMATTR InstName C3
SYMATTR Value 33n
SYMBOL res 16 -80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 128 -80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 3k3
TEXT -648 -144 Left 0 !.lib opamp.sub
TEXT -56 -312 Left 0 !.ac dec 50 20 20K
TEXT -640 -112 Left 0 !.step param w 0 1 .5