Accuracy of the ADC measurement with and without calibrationhttps://devzone.nordicsemi.com/f/nordic-q-a/71686/accuracy-of-the-adc-measurement-with-and-without-calibrationDear All, I am using the ADC to measure 3 voltages applied on different ADC inputs and 3 different channels. My ADC configuration looks like this: And this is how I am performing the individual measurements: This approach yields overall quite good resultsen-USTelligent Community 13Thu, 18 Feb 2021 14:55:06 GMTRE: Accuracy of the ADC measurement with and without calibrationhttps://devzone.nordicsemi.com/thread/295160?ContentTypeID=1Thu, 18 Feb 2021 14:55:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:61c9ba13-d3b0-4ca5-973e-dfd7acce5a87JONATHAN LL<p>Hi,<br /><br />If you can add the values from your measurements from before and after calibration that can help answer this and sapling of GND before and after.&nbsp;<br /><br />This depends on how you measured the accuracy, Offset calibration accuracy is measured by sampling the GNF, if the GND is close to 0 then the offset calibration is accurate.&nbsp;<br /><br />Regards,<br />Jonathan</p><div style="clear:both;"></div>