nRF52832: GFSK modulation

[Lukas Krupp]

Hello everyone,

I would like to know how the (G)FSK modulation on nRF52832 is realized. Is my assumption correct, that a Fractional-N PLL in combination with Delta-sigma modulation is used or is the PLL solely used for generating the carrier signal with a seperate FSK modulation? 

If the second case is true: Which oscillators are used for the FSK modulator? 

Thank you in advance.

Best regards

Lukas

 

[Jon Gunnar]

Hi Lukas,

Yes, your assumption that we are using a Fractional-N PLL in combination with Delta-sigma modulation is correct.

Best regards,

Jon Gunnar