power consumption is too high on my nrf52 SoC

Question

Hi, 
 I am currently trying to decrease my power output, for this purpose I used a power profiler and found this pattern: 
 
 I am using a test firmware that just disables all unused gpio ports, start ble and then goes into while(1){ __WFE();} 
 power consumption is never below 400uA, the spikes seem fine (BLE advertising spikes I presume). 
 s there anything you can tell me about why this would happen? 
 Even if I turn of BLE I still got 200uA on average, so some of the problem is probably in my configuration (but. already increased the adv intervals) and part of it is the chip by itself. I am using a custom PCB but am pulling down all GPIO ports 
 Best, Julius

Vidar Berg · Accepted Answer

You need to change the way you trigger SAADC sampling if you want to reduce the sleep current. The typ. system current with a TIMER instance running in System ON is around 500 uA (see TIMER running ). I would recommend just using the app timer and trigger sampling from a timer callback.

power consumption is too high on my nrf52 SoC

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