PCA10001 Power consumption

[Dani]

Good afternoon,

I'm trying to test PCA10001 eval board power consumption and consumption is about 4mA when it should be considerably lower. To proceed with this measurement I have first cut the SB8 soler bridge and I use an ampere-meter between pin 1 and 2 of P1. Furthermore, after flashing the board, I have switched it off and I have set SW4 to OFF position to switch off J-Link. I have tried with several demos (last one is 'ble_app_hrs') and I still have 4mA power consumption: I switch on board (I have tried with external battery and with USB) and I wait it to finish advertising time to go to system-off mode. In system-off I have these 4mA!!! Do you know which is the problem? Thanks!

[Dani]

Furthermore, with module in System ON and going to sleep I get about 20uA power consumption: I guess this is the 16MHz power consumption, right? In system-on, is it possible to decrease power consumption? Because, if I'm working with S110 Softdevice, 16/32MHz crystal is required, right?

Regards,

Dani.

[Stefan Birnir Sverrisson]

Are you using the example that I pointed you to? The 20 uA is not explained by 16/32 MHz clock, that current is much higher.