I have a Spartan 7 (xc7s50) , I would like to know if it's possible to differentiate and isolate the ADC (or XADC) logic from of the elettronic board.
There are no galvanic islands, right? I wish I could get ADC and logic on the same fpga board, but work on it as if they were on two different electronic boards, because I would like to avoid that if there was a spike in the adc it does not reach the rest of the electronics.
If this will be a custom designed board, then it is possible to isolate an ADC ground from the digital ground. If you are using commercial eval boards, I don't think any are available with isolated grounds.