The AD5110 digital pot data sheet states that the exposed pad is internally floating. I don't generally like floating pads because they are sources for electrostatic noise pickup, so I would like to tie it to ground. Since the pad is internally floating I assume that means that it is not electrically connected to the chip in any way, so I should be able to tie it to ground. Is there any reason that I can't do this?
There should be no problem connecting it to ground.Let me look at the design files and get back to you.