nRF52832 SAADC - Different References per Channel in Scan Mode?

[awneil]

Are there any restrictions (eg, timing) or issues for using different references for different channels in Scan mode?

eg

1. AIN0 uses VDD/4 as reference;
2. AIN1 uses VDD/4 as reference;
3. AIN2 uses the internal reference;
4. AIN3 uses VDD/4 as reference.

I don't see anything mentioned in the Product Spec.

[Jørgen Holmefjord]

Hi,

Not that I'm aware of. The documentation for SAADC in nRF52840 (which is nearly identical to that in nRF52832) say that "Each SAADC channel can have individual reference and gain settings", without listing any limitations.

Best regards,
Jørgen 

[awneil]

OK - thanks.

Please can this be checked, and the nRF52832 doc be updated accordingly?

[Jørgen Holmefjord]

I got confirmation from our developers that there are no limitations with regards to using different references. It is always reconfigured before next sample.

[awneil]

Thanks!