RE: BLE Power Calculations

Stefan Birnir Sverrisson — Thu, 04 Jun 2015 06:57:41 GMT

Hi SumitS

Your calculations make a lot of sense. I am not sure what TX output power you are assuming for your calculations but if we will choose the default 0dBm output power, the current consumption is 10.5mA, but if you have the DCDC converter enabled, the current consumption should be ~8.0mA, see table 37 in the nRF51822 PS.

But then you have to count for all the other factors that contribute to the total current consumption during the TX event. If we assume that you are advertising, you can look at the advertising power profiles in the S110 Softdevice specification v2.0, table 34.

Usually the sleep current is ~3-4uA

More information on how to calculate/estimate the current consumption is given in the current consumption guide.

As the power profiles show, you need to account for some processing in each advertising event as well, in addition to the TX and sleep current, so 5.3uA + 4uA+ some processing.

RE: BLE Power Calculations

SumitS — Wed, 03 Jun 2015 03:18:57 GMT

I am using nrf51822

RE: BLE Power Calculations

Eirik Aa — Tue, 02 Jun 2015 11:50:20 GMT

What chip are you using?