https://devzone.nordicsemi.com/f/nordic-q-a/60869/if-nrf52840-interference-by-1xmhz-radiationHi: By our stack up at Z direction, there is a touch sensor FPC coil above nRF52840 and the gap is 0.65mm And this coil will radiate about 1xMHz radiation Will it impact nRF52840? Thank you~~ BR/Pokien-USTelligent Community 13Thu, 30 Apr 2020 08:38:11 GMThttps://devzone.nordicsemi.com/thread/247475?ContentTypeID=1Thu, 30 Apr 2020 08:38:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f1b441f7-ef17-4beb-821e-b1a06c966c35ketiljo<p>If there are harmonic frequencies of this that falls on 32 MHz, it can impact the system clock. It also depends on field strength of the sensor signal. I think you must test this to be sure.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/247440?ContentTypeID=1Thu, 30 Apr 2020 06:13:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e58a4457-2934-41ae-b307-1ef62d6d2d8ePoki Huang<p>Hi&nbsp;</p> <p>I add some clear description</p> <p>The FPC coil is for inductive touch sensor, above the FPC coil 0.2mm is metal</p> <p>When we press metal will let metal more close to FPC coil and the FPC coil will radiation</p> <p>And the radiation frequency will be around 10MHz~18MHz</p> <p>Will it impact nRF52840?</p> <p>Thank you~~</p> <p>BR/Poki</p><div style="clear:both;"></div>