Version 4
SHEET 1 904 680
WIRE 224 16 144 16
WIRE 432 16 304 16
WIRE 336 96 288 96
WIRE 432 96 432 16
WIRE 432 96 400 96
WIRE 32 176 -96 176
WIRE 144 176 144 16
WIRE 144 176 112 176
WIRE 176 176 144 176
WIRE 288 176 288 96
WIRE 288 176 256 176
WIRE 336 176 288 176
WIRE 432 192 432 96
WIRE 432 192 400 192
WIRE 496 192 432 192
WIRE -96 208 -96 176
WIRE 144 208 144 176
WIRE 336 208 288 208
WIRE -96 304 -96 288
WIRE 144 304 144 272
WIRE 288 304 288 208
WIRE 16 368 -32 368
WIRE -32 400 -32 368
WIRE -80 416 -96 416
WIRE -80 512 -80 464
WIRE -32 512 -32 480
FLAG 288 304 0
FLAG 144 304 0
FLAG -96 304 0
FLAG 496 192 out
FLAG -96 176 in
FLAG -32 512 0
FLAG -80 512 0
FLAG -96 416 in
FLAG 16 368 test
FLAG 144 16 U1
SYMBOL Misc\\EuropeanResistor 128 160 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL Misc\\EuropeanResistor 272 160 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R2
SYMATTR Value {R2}
SYMBOL Misc\\EuropeanResistor 320 0 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value {R3}
SYMBOL cap 128 208 R0
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL cap 336 112 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL Opamps\\opamp 368 128 R0
SYMATTR InstName U1
SYMBOL voltage -96 192 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 0
SYMATTR Value2 AC 1
SYMBOL e -32 384 R0
SYMATTR InstName E1
SYMATTR Value Laplace=(-R3/R1)/(1+s*C2*(R2+R3+R2*R3/R1)+s*s*R2*R3*C1*C2)
TEXT 144 -136 Left 2 !.param R1=5k R2=7k R3=15k C1=10n C2=15n
TEXT -112 -136 Left 2 !.lib opamp.sub
TEXT -112 -96 Left 2 !.ac dec 100 1 10k