Is there anyway to get these links working again? They don't seem to be functional. Also, I'm assuming that the output of the voltage divider is unaffected by the capacitor.
So with a fully charged lithium ion batter (4.2V) you would expect to see a voltage of
4.2*(2.2/10) = .924V
Is the functionality of the circuit as follows? The capacitor is just acting to store up some charge to dump charge into the internal capacitor used by the ADC. It is essentially acting as a low impedance voltage source for the ADC sampling circuit?
Stefan,
Thank you for the answer. My team and I are only planning to sample once a minute. So no issues on sampling rate. Does Nordic publish the approximate size on the internal ADC sampling cap? The setup you just suggested will work great for our current application, but in the future it might be nice to know the size of the internal cap. That way we could properly figure out what value the external cap needs to be.
Stefan,
Thank you for the answer. My team and I are only planning to sample once a minute. So no issues on sampling rate. Does Nordic publish the approximate size on the internal ADC sampling cap? The setup you just suggested will work great for our current application, but in the future it might be nice to know the size of the internal cap. That way we could properly figure out what value the external cap needs to be.
