https://devzone.nordicsemi.com/f/nordic-q-a/80760/nrf52832-saadc-multi-channel-readinghello, I tried to read adc sampling value from (NRF_SAADC_INPUT_AIN0~ NRF_SAADC_INPUT_AIN4) with pip mode. Here are my code as followings If I have no any voltage into adc input channel, I had a result as following &lt;info&gt; app: 80 80 81 71en-USTelligent Community 13Mon, 18 Oct 2021 11:47:47 GMThttps://devzone.nordicsemi.com/thread/334580?ContentTypeID=1Mon, 18 Oct 2021 11:47:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1bb2c7bd-e443-41b6-a2c5-816693087b38Kenneth<p>Each analog input should have a source connected, if the input are not connected to anything, then the input will be &quot;driven&quot; by the paracitic in the traces/pads, in other words you can measure anything. So you need to connec the input to a source, if the source have very high impedance you may consider adding a 10nF on the input.</p> <p>Kenneth</p><div style="clear:both;"></div>