Change Reference Voltage for ADC

[adnankhalid]

Hello,

I am using the ADC input on the nRF52 DK and its working correctly. Its setup right now to use its Internal Voltage as Reference. I wanted to know if there is anyway to change that to 5V.

The board does have 5V output so was wondering if that can be used as the reference? If not then anyway to increase the reference from the current v3.2V to 5V.

Please advise.

Thanks,

Adnan

[Priyanka]

Hi Adnan,

The 52DK has nRF52832 SoC on it, which does not support USB or High Voltage mode, so the maximum input is limited to 3.6V, which is also the case for any of the GPIO pins or inputs to SAADC.

Best Regards,

Priyanka

[adnankhalid]

Thank you Priyanka for the clarification.

[Priyanka]

You're welcome