ADC reference voltage

[Umesh]

I am new to nrf52. I am unable to find out ADC refernce voltage pin. Can any one help?

[Martin Lesund]

Hi Abhimanyu,

The nRF52832 do not have an ADC reference voltage pin. Instead it has internal reference or VDD/4.

Controlled in the REFSEL field in the CONFIG register. 

Link to documentation

[Umesh]

is it not risk? VDD usually has large working range?