saadc analog reading

[ps_anu]

Hi ... folks 

 I am using nRF52832 and analog IR sensor , Working with the example saadc . In this case , i am giving the IR sensor input voltage as  5v , analog pin 2 .I am getting the voltage range above 500 to 850. 

can you explain me the calculation , how the adc values are obtained , from this value how to filter my output voltage value ? I need the output voltage value so that i can start to calibrate the IR sensor distance value . please help me out 

Thanks&Regards 

bavithra k 

[Jared]

Hi,

You can't use the SAADC to sample a voltage that is higher than VDD. See the product specification for information on how the SAADC works.

regards

Jared