ESP32 Forum • ADC internal/external reference

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ADC internal/external reference

Posted: Fri Feb 12, 2016 11:16 pm

by frenkR

Hi,
1.) has ADC any option to "define" external reference?
2.) is there any pin to "access" internal ADC reference ?

Re: ADC internal/external reference

Posted: Mon Feb 15, 2016 1:33 pm

by johnlee

nope. only internal reference. The DAC is reference to same voltage as the ADC.

Re: ADC internal/external reference

Posted: Tue Feb 16, 2016 2:12 am

by frenkR

Thank you for a nice hint. That is what I was looking for.
Rgds.