nrf52 saadc current

[yaron]

Hi

I have noticed that the moment I start SAADC task ("nrf_saadc_task_trigger(NRF_SAADC_TASK_START);"), my CPU current consumption rises by 2 mA! (tested with chip version QFAABA / 1542AB, on PCA 10036 board).

according to Product Specification 0.6.3, "ADC current during ACQuisition and CONVersion35 700 µA".

How can that be explained?

Thanks Yaron

[Jorgewu]

Hi Kirkus: According the sample I referred, I have not call the function of nrf_drv_saadc_sample_convert(), and I am using the nrf_drv_saadc_sample(). Is any sample codes can be referred ? Thanks..

[Stefan Birnir Sverrisson]

There is an saadc low power example now available on Github. It also includes a lof of explanation on how the low power is obtained, both at the top of the main.c file and in code comments.