Re: Op amp circuit with different cut off frequencies
You'll usually start the design at a different point, after defining intended gain and bandwidth, you'll chose a suitable OP. OP1177 has GBW of 1.3 MHz and can't achieve your specification.
Secondly, you'll select resistors first according to OP and transducer parameters, then chose capacitor values.
Yes, BW2 and BW2 are high-pass corners and should be below the operation band. Also supply filter low-pass corner BW1.
BW1 calculation is only valid for Rin >> RA.