Is is possible to get sub dBm output power control on the nRF52?

[CurtisHx]

With there being +/- 4dBm variability in output power from nRF52 to nRF52, each device needs to be calibrated in order to comply with FCC rules. One of the rules is there can only be x dBm difference from device to device. I think each device needs to be within 0.5dBm on either side of the certified device.

Anyways, just going on experience from past projects, finer control over output power is better. Is it possible to get sub 1dBm steps on the nRF52? I looked through the datasheet and didn't find anything obvious.

[Øyvind Karlsen]

Hi,

It is not possible to set the power in +/- 0.1 dBm steps.

We have not encountered any such regulation, where did you find this? The norm is to test a golden sample.

Best regards,

Øyvind

[CurtisHx]

That is for FCC Part 15 Certification. Truth be told, I'm not entirely sure what the FCC requires, but we had to work hard on past projects to ensure consistent output power from device to device. I think we can make 1dBm steps work, but I was curious if it was possible to get finer output power control.