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External Voltage Reference Pin
Posted: Wed Apr 04, 2018 6:54 pm
by mlibby
Hello, I want to use an external voltage reference of 2.5V for ADC, but I have not found in the documentation what the pins are for connecting this device. Any help please? Also what changes in registers are required to use that external Vref? Thank you
Re: External Voltage Reference Pin
Posted: Thu Apr 05, 2018 2:17 am
by ESP_Sprite
Sorry, the ESP32 does not support an external reference voltage.
Re: External Voltage Reference Pin
Posted: Thu Apr 05, 2018 12:18 pm
by mlibby
Thank you, then how to access the internal voltage reference and what is that value? Also what is the +/- voltage range for the analog channels inputs?
Best regards