Our design will use instrument amp after sine excitation signal. We are learning about “The Designer’s Guide to Instrumentation Amplifiers ” and find below info.
Follow the description seems it's for DC excitation signal. So my confusion is ,
If it's AC excitation signal, how to design the -3dB diff and CM frequency of RFI filter?
If the input AC signal is with 100kHz, the filter's -3dB frequency should be above 100kHz, that's right?