Read ADC-values

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Re: Read ADC-values

Post by redpitaya » Tue Jan 03, 2023 1:44 pm

Felix-Peter2000 wrote:
Mon Jan 02, 2023 1:50 pm
What is the internal reference voltage of the ADC of the Red Pitaya? I can't find anything about this in the data sheet.
0.5V !

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

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