How to design a sharp 200kHz band pass filter
With TI’s free active filter design for any filter type Bessel , Linear Phase , maximally flat Chebychev etc up to 10th order where 8th order is just a quad OpAmp and 8RC’s with choice for nearest tolerance options but you MUST DEFINE;


BPF -3dB passband width , centre f , band stop width and attenuation at stop then type


If you define the noise level and BW then signal level and BW and probably want Bessel for flat group delay then you will know SNR from which you can determine BER from related curves.