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Sleep Mode Current

I know there have been a ton of topics about this but I've tried pretty much every solution I can think of and I cannot seem to figure out why my sleep current is consistently ~90 uA on my custom board. Here's my configuration:

  • SD 8.0.0 + SDK 8
  • Custom board with nRF51822 (rev 2)

I tried the system_power_on and system_power_off examples and I get 2.6 uA and 0.6 uA, respectively, so I know it's not the rest of my hardware that's causing the issue. I use sd_app_evt_wait and after that the device stays consistently at ~90uA. I also tried the ble_app_pwr_profiling_s110 example where I increased the advertising interval significantly and I see the same 90 uA in between advertisements.

I tested my application on the nRF51-DK and I get ~4-5 uA between advertisements which leads me to believe that it might be caused by me using a second revision chip on SDK 8. Can it be this or could it be something else?

My application was built using the ble_app_template_s110 as a template if that helps.

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