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?

[Martin Lesund]

I am not quite sure what you are asking here.

Please read through the documentation linked to in the last post and also read through the SAADC hardware Driver.

I would also invite you to read through this blog post that shows an example how you can use the ADC.

[rsramki]

Hi,

How can we get VREF voltage to an output pin

[Martin Lesund]

Please make a new case, this case is over 3 years old