Other Parts Discussed in Thread: TMP117
Dear TI team
I have used the tmp116 in a prototype board. It has worked as expected and compared positively with the TI EVM board.
In that design the large thermal pad, underneath the chip, was left floating with few unplugged vias.
Now I need to re-spin this board. The newer board will have an RF shielding can and the tmp116 has to go under. There will be a hole in the can on the top of the
sensor. For this new design connecting the thermal pad to ground will simplify the board. I am wondering how that would affect the fidelity of the air temperature measurement.
Naively I think that the pad being connected to the ground which is connected to the can, could be even better as the can acts as heat sink (removes the heat from the ground plane).
Any thoughts advise or guidance is most appreciated.
Kind regards
AbderrezaK Mekkaoui