SX1276 single RF path design

I’m evaluating the possibility of a single-path design for 433Mhz with 20dBm output using PA_BOOST.
Could you please describe why it is mentioned that tying PA_BOOST with RFI is not recommended?
Because of excessive load on RFI, or?

Based on AN1200.19, Fig.6 I believe that connecting PA_BOOST to the matching network should be done using a series inductance of 2.2nH.
Is my assumption correct?


By the way, there is obviously a typo in Fig.6.


Than you very much for reporting the typo. Yes, for reliability reasons, it is not possible to combine RFI and PA_BOOST wthout an antenna switch configuration, as this would overload the LNA input and compromise long term reliability.

Best regards

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