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AD5110 exposed pad connection

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?