How much negative voltage does the Arduino Due analog pin survive?

Other Hardware 3rd Party Boards
13

Hi @dueszdt

I know the maximum value is -0.3V, but you can put a diode
with the cathode on the analog pin and the anode on GND.

This was the lowest VF diode I found.

0.37V.
https://br.mouser.com/datasheet/2/80/CDBZ0130L_HF_RevD313267-2504944.pdf

It's better than not putting anything.

RV mineirin