nrf52832 current consumption

[Prasad]

Hi Everyone!!! I am interested in nrf52832. I was going through its product specification v1.2 available over here:link text

At page no: 1, in the section: Key Features, it is given as follows: 5.3 mA peak current in TX (0 dBm) 5.4 mA peak current in RX

However, at page no: 76, in section: 17.1.1 Electrical Specification, it is given as follows: 7.1mA typical current in TX(0 dBm) 6.5mA typical current in RX.

Which one to consider?

Regards, Prasad

[Ole Bauck]

5.3mA is TX only run current at 0 dBm with DCDC enabled and 3V Vdd. Similar, 5.4mA is RX only run current at 0 dBm in 1Msps / 1Msps BLE mode, also with DCDC enabled and 3V Vdd.

The values in section 17.1.1 (here) are the total current consumption when using the radio in TX or RX mode. The radio will request different other resources (like the HFCLK) when it is used, therefore the total current consumption is higher. These are the values to consider when using the radio.

I would recommend you to take a look at the online power profiler for estimating the current for a bluetooth application on nRF52. The values used here are based on measurements (and are actually lower than the ones in the specification).