Hello,
I seem to be having a problem with noise rectification with the PGA281; it seems like any noise past 100kHz gets rectified into a DC bias, which makes it impossible to filter out. It's not practical for me to put an active filter in front of the PGA281, is this fixable?
Here is what I'm seeing on an oscilloscope, i'm using a function generator with a log sine sweep. I'm using the PGA281 evaluation module with the output filter removed, powered from +/-15V. The negative input of the amplifier is grounded, and the sine wave is injected on the positive input.