https://devzone.nordicsemi.com/f/nordic-q-a/27630/why-is-vdd-producing-2-85-voltsFor the PCA 10040 DK, Why is VDD producing 2.85 volts? I would expect it to product 3.3.en-USTelligent Community 13Mon, 27 Nov 2017 20:36:06 GMThttps://devzone.nordicsemi.com/thread/109120?ContentTypeID=1Mon, 27 Nov 2017 20:36:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee495362-e2f3-4068-9e96-3ea12a334e0cAmbystomaLabs<p>Per the schematic you will notice that the 3.3v output from U3 goes through D1A before it becomes VDD and VDD_nRF. D1A has a forward voltage drop of 0.36 to 0.44V depending on how much load is in the circuit. 3.3 - 0.44 is 2.86V plus or minus the accuracy of your DVM and the nominal offset of U3.</p><div style="clear:both;"></div>