2nd Order OpAmp Highpass Filter

Response type: Butterworth     Bessel
f3dB= Hz
R1= ohm
R2= ohm
C1= F
C2= F

Notes:
R1 and R2 interchangeable.
If C1=C2 the filter has real poles and the passband is flat.
If R1=R2 and C1>C2 the filter has complex poles.

© 1998 Tom Ahola