High Pass Filter Cebyshev/Multiple Feedback * ripple=0.5dB V1 1 0 0 AC 1 C1 1 2 1000p R1 2 0 4.49k C2 2 3 1000p C3 2 4 1000p X1 0 3 4 OPAMP1 R2 3 4 20.1k C4 4 5 1000p R3 5 0 1.86k C5 5 6 1000p C6 5 out 1000p X2 0 6 out OPAMP1 R4 6 out 145k .SUBCKT OPAMP1 1 2 3 R1 1 2 10Meg E1 4 0 1 2 100k E2 5 0 6 0 1 R2 4 6 1k C1 6 0 1.5915u R3 5 3 50 .ENDS OPAMP1 .AC DEC 100 100 1Meg *#destroy all *#run *#plot db(V(out)) *#plot ph(V(out)) .END