nRF51422 power/current measurement

[10Hsin]

I have a nRF51422 dongle, and I want to know the power/current when an UART event happens.

I've read nRF51822_Development_Kit_User_Guide_v1.4 p.29 for Current Measurements, but I don't have the Motherboard, and I'm not sure if the method is suitable for nRF51422. I check the user guide due to this thread

I've also read S110_SoftDevice_Specification_2.0 14.1 and 14.2, but there were only current calculation for connection event and advertising event,

So if I want to know the power consumption, is there any formula or methods avaliable without Motherboard ?

[Øyvind Karlsen]

Hi,

Have a look at the following tutorials:

• Current measurement guide: Introduction
• Current measurement guide: Measuring current with PCA10040 v0.9.0

For the nRF51 dongle the current measurement setup is not so straightforward as there are no solder bridges, you could however attempt to use the oscilloscope method as described in the tutorials. When doing this you will utilize the 3v3 and GND ports along the side of the board.

Best regards,

Øyvind

[10Hsin]

Thanks for your response, it really helps.