Version 4
SHEET 1 880 680
WIRE 48 -16 -96 -16
WIRE 192 -16 112 -16
WIRE 400 -16 304 -16
WIRE 576 -16 464 -16
WIRE 80 64 32 64
WIRE 192 64 192 -16
WIRE 192 64 160 64
WIRE 416 80 400 80
WIRE 576 80 576 -16
WIRE 576 80 496 80
WIRE -192 192 -304 192
WIRE -96 192 -96 -16
WIRE -96 192 -112 192
WIRE -80 192 -96 192
WIRE 32 192 32 64
WIRE 32 192 -16 192
WIRE 96 192 32 192
WIRE 192 208 192 64
WIRE 192 208 160 208
WIRE 208 208 192 208
WIRE 304 208 304 -16
WIRE 304 208 288 208
WIRE 320 208 304 208
WIRE 400 208 400 80
WIRE 400 208 384 208
WIRE 432 208 400 208
WIRE 96 224 64 224
WIRE 560 224 496 224
WIRE 576 224 576 80
WIRE 576 224 560 224
WIRE 432 240 400 240
WIRE -416 272 -416 256
WIRE -416 272 -464 272
WIRE -304 272 -304 192
WIRE -464 288 -464 272
WIRE -416 288 -416 272
WIRE 64 288 64 224
WIRE 400 288 400 240
WIRE -304 400 -304 352
WIRE 64 400 64 368
WIRE 64 400 -304 400
WIRE 400 400 400 368
WIRE 400 400 64 400
WIRE -304 432 -304 400
FLAG -464 288 0
FLAG -304 432 0
FLAG -416 176 vcc
FLAG -416 368 vee
FLAG 128 240 vee
FLAG 464 256 vee
FLAG 128 176 vcc
FLAG 464 192 vcc
FLAG 560 224 out
SYMBOL Opamps\\UniversalOpamp2 128 208 R0
SYMATTR InstName U1
SYMBOL Opamps\\UniversalOpamp2 464 224 R0
SYMATTR InstName U2
SYMBOL res -208 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL res 64 80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value {R2}
SYMBOL res 48 272 R0
SYMATTR InstName R3
SYMATTR Value {R2}
SYMBOL res 192 224 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value {R4}
SYMBOL res 400 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value {R5}
SYMBOL res 384 272 R0
SYMATTR InstName R6
SYMATTR Value {R5}
SYMBOL cap -80 208 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL cap 48 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value {C1}
SYMBOL cap 320 224 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value {C1}
SYMBOL cap 400 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value {C1}
SYMBOL voltage -304 256 R0
WINDOW 123 24 120 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(0 1 1k)
SYMBOL voltage -416 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -416 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 12
TEXT -392 -104 Left 2 !.ac dec 100 10 10k
TEXT -544 -48 Left 2 !.step param Rx list 1 2 3
TEXT -544 -16 Left 2 !.param R1 table(Rx, 1,4.4k, 2,2.2k, 3,450)
TEXT -544 16 Left 2 !.param R2 table(Rx, 1,44k, 2,88k, 3,285k)
TEXT -544 48 Left 2 !.param R4 table(Rx, 1,2.4k, 2,1.2k, 3,390)
TEXT -544 80 Left 2 !.param R5 table(Rx, 1,24k, 2,48k, 3,223.26k)
TEXT -544 112 Left 2 !.param C1 table(Rx, 1,56n, 2,56n, 3,6.8n)