Power consumption when disable RF for nRF51822

[sunnyjet16]

Hi,

I got a question on power consumption: In my case, I do not need RF functions on most of time. If disable RF function, what working current of nRF51822 would be?

Regards Alex

[Petter Myhre]

Have a look at the nRF51822 Product Specification 3.1, available here.

Have a look at Table 32. In System ON the base current consumption is 2.6 uA with 16 kB RAM enabled, and 3.8 uA with 32 kB RAM enabled.

[sunnyjet16]

Thank you, Petter. But I guess you get me wrong. I want to disable RF function but keep CPU running at 16MHz, and executing code is from flash memory. I checked Table 34, it says CPU typical current is 4.1mA. My question is plus peripheral current, how much would the total current be for nRF51822 chip? Regards Alex

[Petter Myhre]

It depends on what peripherals you are using, so it is difficult to answer. You should be able to find the information in the PS.