Hello,

I need to measure a 5V range but because of the voltage-regulator's "adjust" pin, the relative 0V (zéro) is already 1,2V!

Currently, the range is from 1,2V to 6,2V if measured against Vss (GND).

I already set ADCON0.6=1 (+Vref) and use a 6,2V Zener.

Now, AD reads from Vss to +6,2V.

But when I need to read "0V" (zéro), AD will still give me something like 70 (8bit res) because I can't get lower than 1,2V.

How can I pull the GND up from 0 to 1,2V or what is the way to do it right?