https://devzone.nordicsemi.com/f/nordic-q-a/80187/nrf52832-saadc-s-problemHI: MCU: nRF52832 Reference example: ...\nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_uart\pca10040\s132\arm5_no_packs ...\nRF5_SDK_15.3.0_59ac345\examples\peripheral\saadc\pca10040\blank\arm5_no_packs I Used the SAADC Detect theen-USTelligent Community 13Fri, 01 Oct 2021 13:23:32 GMThttps://devzone.nordicsemi.com/thread/332161?ContentTypeID=1Fri, 01 Oct 2021 13:23:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cc9fb4e3-2d0b-4729-b030-8c29a135204cPriyanka<p>Hi,</p> <p>It is possible to detect sine waves with SAADC, provided that the SAADC sampling rate is much higher than the frequency of the sine wave.</p> <p></p> <p>In your case, the sine wave has a frequency of 13.56Mhz which is much higher than the&nbsp;<a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52832.ps.v1.1%2Fsaadc.html&amp;anchor=unique_2086214164">maximum sampling rate of SAADC</a>. While sampling, it is important to obey the <a href="https://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem">Fundamental Sampling Theorem</a>.</p> <p></p> <p>Hope this helps! :)</p> <p></p> <p>Regards,</p> <p>Priyanka</p><div style="clear:both;"></div>