effect of the ADC Fclk tolerance on result accuracy?

[JeorgeB]

Hi,

In external ADC devices datasheet, there is a section which give some information such as conversion result accuracy with Fadc_clk relation or AVDD tolerance vs result error. but in S321xx datasheet, these information are not provided.

for example, if I use FIRC (1%) or SIRC(3%), what will be happened to ADC result accuracy?

Thanks.

[Omar_Anguiano · Accepted solution]

Hello

Unfortunately we don't have that specific parameter. In this application note you can find the ADC specs and the best practices to increase accuracy https://www.nxp.com/docs/en/application-note/AN12217.pdf

Let me know if this is helpful, if you have more questions do not hesitate to ask me.

Best regards,

Omar

[JeorgeB]

what is effect of the sampling time in the input impedance?