How does SAADC measure battery power through VDD pin

[helen]

Hi

          I want to measure the battery power by using SAADC to measure the value of VDD，The battery to be considered is 4.2V or 3.7V lithium battery，How should the circuit be designed？Thank you.

[SwRa]

Hi,

Nordic has a blog on how to measure Lithium Battery voltage with nRF52. I believe this will help you to design the circuit. Kindly let me know how it goes.

Kind Regards,

Swathy Ramakrishnan