Re: Read ADC-values
Posted: Tue Jan 03, 2023 1:44 pm
0.5V !Felix-Peter2000 wrote: ↑Mon Jan 02, 2023 1:50 pmWhat is the internal reference voltage of the ADC of the Red Pitaya? I can't find anything about this in the data sheet.
In the ADC schematic, there is a SENSE (Pin 63): Reference Programming Pin. Connecting SENSE to VDD selects the internal reference and a ±1V input
range. Connecting SENSE to the ground selects the internal
reference and a ±0.5V input range. An external reference
between 0.625V and 1.3V applied to SENSE selects an
input range of ±0.8 • VSENSE.
SENSE is 0 in schematics, so it is 0.5V