https://devzone.nordicsemi.com/f/nordic-q-a/72796/saadc-read-only-3v-although-input-is-3-3vHi, I use default config: #define NRFX_SAADC_DEFAULT_CHANNEL_CONFIG_SE(PIN_P) \ { \ .resistor_p = NRF_SAADC_RESISTOR_DISABLED, \ .resistor_n = NRF_SAADC_RESISTOR_DISABLED, \ .gain = NRF_SAADC_GAIN1_6, \ .reference = NRF_SAADC_REFERENCE_INTERNAL, \ en-USTelligent Community 13Mon, 15 Mar 2021 08:55:30 GMThttps://devzone.nordicsemi.com/thread/299687?ContentTypeID=1Mon, 15 Mar 2021 08:55:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29a713c7-877c-4485-8a49-799394007690Nahan_Trogn<p>Hi,</p> <p>Tks for your information, I just measure and It is really 2.9V</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299684?ContentTypeID=1Mon, 15 Mar 2021 08:52:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:feea21ea-330e-4acd-8b6d-b7360adb6d17H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>It is approx. 2.9V (3.3V - diode drop) on the DK.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299681?ContentTypeID=1Mon, 15 Mar 2021 08:40:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47d82c75-2cda-4525-aa20-30822d7510f8Nahan_Trogn<p>Hi,</p> <p>What is VDD_NRF mean? I use nRF52-DK (nrf52832) with usb cabble connect direct to my PC to programe. So the value of VDD_NRF is?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/299677?ContentTypeID=1Mon, 15 Mar 2021 08:32:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7649c745-a113-4d27-a30b-ed85120c9849H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>The SAADC input voltage cannot exceed VDD_NRF. What is the VDD_NRF on your board?</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>