Help for Amplifier & Integrator Circuit design

[manjuarun]

Hi,
Anybody of you please help me to design an amplifier and an integrator circuit which will be using for rogowski coil output.
Specification

Current to be measured - 50 - 150A (rms)
Frequency Range - 45-65 Hz
Rogowski coil output - 1mV - 100mV
Opamp - should be of single supply with supply voltage 2.7-3.3V (It seems LT1630 , OPA338 etc are good . not sure!!)

Can anyone of you pls help me to design an amplifier and then an integrator for this application? Is differential amplifier to be designed(bcz of common mode noise)?

Thanks
Manju

 

[keith1200rs]

Have a look here:



Keith.