Configuring the Crystal offset frequency for BLE transmission

[thbj_widex]

Hi, sorry for if this has been answered elsewhere.

I am currently designing the production setup for a product using the nrf52840 as a BLE radio. 

I can't find how the carrier frequency of the radio may be tuned in the documentation?

Best regards

Thomas

[Einar Thorsrud]

Hi Thomas,

There is no way to tune the carrier frequency. You just have to use a 32 MHz crystal that is within the specification for the HFXO and make sure you use proper load caps, and this dictates the accuracy of the output RF signal. See General PCB design guidelines for nRF52 series.

[thbj_widex]

Hi Einar

Okay, we are also doing that. It's just not how we normally do with other Radio ICs