https://devzone.nordicsemi.com/f/nordic-q-a/75451/saadc-power-usage-with-2-channelsWith SDK15.3, s140 softdevice, NRF52840 (InsightSIP ISP1807) If I use SAADC with 2 channels then I see a 0.7mA sleep current after the call to nrfx_saadc_sample() 8bit resolution Oversample disabled Low power mode enabled (NRFX_SAADC_CONFIG_LP_MODEen-USTelligent Community 13Tue, 25 May 2021 10:06:50 GMThttps://devzone.nordicsemi.com/thread/311396?ContentTypeID=1Tue, 25 May 2021 10:06:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e1672fb-5597-46e1-a805-f40d501a9e0bJason<p>closing because I see this is a known issue</p> <p></p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/68486/saadc-multichannel-power-consumption-is-higher-than-single-channel">https://devzone.nordicsemi.com/f/nordic-q-a/68486/saadc-multichannel-power-consumption-is-higher-than-single-channel</a></p> <p></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/311139?ContentTypeID=1Fri, 21 May 2021 19:18:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7a225bff-6450-4fee-9205-1ff8bd30b3b9Jason<p>I&#39;ve changed my code to initialise and uninitialise and it seems to fix the problem. I&#39;m just not sure why I need to.</p> <p>It happens&nbsp;even if I specify the same&nbsp;NRF_SAADC_INPUT_AIN for both channels and it&#39;s ok if&nbsp;I sample that channel on it&#39;s own.</p> <p>I cannot see anything in the NRF52840 product specification that indicates why 2 channels would have this problem. I&#39;m not using continuous sampling.</p> <p>Also, I tried to change the acquistition time of one of my channels but I didn&#39;t see the values increase. Is it OK to specify a longer acquisition time for one channel but not the other?</p> <p>Thanks again for your help.</p><div style="clear:both;"></div>