nRF51 sensitivity on DCDC

[selim]

Hello,

What is the effect on the radio sensitivity of using DCDC mode on the nRF51 rev3? How many dB do we lose?

Thanks, Selim

[Dave_couling]

This depends alot on your Hardware layout. If you have a noisy PCB design it could desense your RF circuitry.

[FredrikK]

I think the question is more related to whether the internal DCDC of the nRF51 will affect receiver sensitivity (assuming the reference layout is used).

[selim]

Thanks Fredrik for clarifying my question. This is exactly it.

[ovrebekk]

Hi

The sensitivity loss when using the DCDC is very small.

Worst case you might lose up to 1dB, typically it is about 0.5dB.

Best regards
Torbjørn