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There are several alternatives - mostly based on multi-amplifier biquad (state variable) design.
One simple method is given in the pdf attachement.
Bandpass: Vin,1=Vin,3=0 (grounded) and Vout/Vin,2=bandpass response.
But note that the output requires a buffer amplifier (with voltage output).
Note also: The given circuit is of 2nd order. By definition, there are no bandpass circuits of 3rd order - only 2nd and 4th and 6th....
---------- Post added at 13:52 ---------- Previous post was at 13:51 ----------
thank u sir for helping me
---------- Post added at 13:54 ---------- Previous post was at 13:52 ----------
actually i have a modulated output (differential) which i have to pass through a bandpass filter..thn throgh a demodulator.... (chopper stabilization technique).. can u plz help on this..
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