Hi,
we are using active voltage divider as battery readout circuit. It is controlled by MCU NRF52832 pin P0.09. Voltage from divider is read by integrated SAADC on pin P0.05. Without MCU hardware works well but with MCU value on ADC is corrupted. Looks like some internal pull is connected.
I checked register value and P0.05 is configured as disconnected input. After turning on the MCU the ADC value is looking good for a few milliseconds and then is droping down to zero.
Do you have any suggestions?
