nRF54L15 BLE RX current comsumption

[loquat]

I measured the power consumption of the BLE RX using the nRF54L15.(nRF54L15-DK v1.0.0)
3.0V operation
apps: scan_adv (delete advertising)
west build -b nrf54l15dk/nrf54l15/cpuapp
proj.conf
CONFIG_BT=y
CONFIG_BT_BROADCASTER=y
CONFIG_BT_OBSERVER=y
CONFIG_LOG=n
CONFIG_SERIAL=n

Result: The average current consumption was 3.73mA.
This is 330uA higher than the 3.4mA stated in the datasheet.
Is this correct behavior? Is further processing required to reduce it to 3.4mA?

[Simonr]

Hi

I just wanted to confirm that I reproduced this on my end now, with the scan_adv sample on NCS v3.2.0 as well, and it seems to be because it's not power optimized, so something else must be running in the background.

I still haven't found exactly what, and will continue to look into it, but due to a public holiday in Norway tomorrow, I won't be able to get back to you until next week. In the meantime, you can try experimenting with adding power management to the sample and try disabling parts of the sample you're not using, like advertising, UART/shell/logging and enabling power management with CONFIG_PM. See this blog post for details:  Optimizing Power on nRF5340 SoC Designs  

Best regards,

Simon

[loquat]

OK.