nRF52833 ADC tolerance over 0 ~ 100C operating temperature

RE: nRF52833 ADC tolerance over 0 ~ 100C operating temperature

helsing — Tue, 02 Jan 2024 14:58:18 GMT

Hi Edwin,

I will have a look at this while Jared is out of office.

[quote user=""]Reference the spec, we find DNL12(we use 12bit) type 4.7 LSB, it means ADC 4096 value has +/- 4.7 deviation?[/quote]

Sorry for the confusion, are we talking about INL12 or DNL12?

RE: nRF52833 ADC tolerance over 0 ~ 100C operating temperature

Edwin_TTi — Thu, 28 Dec 2023 03:26:06 GMT

Hi Jared,

I'm sorry, I don't get your means.

AN0 deviation is +4.7 ADC, AN4 ADC is -4.7 ADC at the same time?

Thanks,

Edwin

RE: nRF52833 ADC tolerance over 0 ~ 100C operating temperature

Jared — Fri, 22 Dec 2023 10:23:12 GMT

Hi,

[quote user=""]Reference the spec, we find DNL12(we use 12bit) type 4.7 LSB, it means ADC 4096 value has +/- 4.7 deviation[/quote]

4.7 LSB yes,

DNL error for a specific bit tells you how much wider the actual step width the converter is from the ideal step width of the transfer function. All of the errors listed in the product specification is specific for the SAADC peripheral itself, the deviation should not be different between analog pins. At least it should be within the MIN and TYP as listed in the Product spec. The ideal step width is 1 LSB.

regards

Jared