External ADC Voltage Reference Boron

Hardware
#1

I want to use an external voltage reference for the ADC on the Particle Boron but there seems to be no information on it.

Boron board doesn’t have a dedicated analog reference pin but from looking at the datasheet for the NRF52840 it’s possible to use one of the analog input pins into an external analog reference.
Has any body tried this or any other method of using an external reference?

nRF52840
nRF528401000×546 40.8 KB

Cheers

#2

You’d have to have new particle firmware to set those ADC modes. Easiest and best option is to use your own external ADC. I recommend the ADS1119IPWR

1 Like
#3

Thanks for the suggestion. Is there hope that this will be supported for future firmware? It’s a pretty basic capability to have an external voltage reference.

#4

Probably best to do a feature request on their github