nRF5340 reference design RF circuit have recommandation proposle from two diference package

[Albert.lai]

Hi,

I have a quetion,nRF5340 have two package, so have two diference RF circuit,as below picture,Why are the matching circuits different?

Package is QKAA aQFN94

Package is CLAA WLCSP

B&R

Thanks.

Albert.Lai

[Jared]

Hi,

Most probably because tests have shown that you need an extra series inductor to achieve good enough matching on the WLCSP package.

regards

Jared