adc clock in nrf51

[nordicbeginner]

what is minimum clock at which adc can operate in nrf51??. can anyone tell me?? how to change adc clock in nrf51??. i am using sdk11

[Sigurd]

I commented out the printfs at the start, and commented out the nrf_delay_ms, and I measured 1.48mA on a nRF51-DK. Note that you are continuously sampling the ADC. If you don't need continuous sampling of the ADC, I recommend setting up a app-timer that starts the ADC sample e.g. every 100ms. This will decrease the power consumption further.