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CC1352P7: IPC for third RF channel

Lenio Cacula
Genius 16720 points
Part Number: CC1352P7
Other Parts Discussed in Thread: CC1352P

SWRA629A app note describes in detail the use of Murata and JTI IPC's, but vaguely mentions the application for the CC1352P. Is it correct to assume a third IPC is needed for the PA channel and if so, do we recommend the same kind, thus living one IPC channel unused? Do we have any examples for IPC use with the CC1352P?

Thank you!

  • +1
    TI__Mastermind 18275 points

    Hi,

    You are correct that the IPCs described in SWRA629A are for the +14 dBm Sub-1 GHz and +5 dBm 2.4 GHz outputs (RX/TX). Therefore, you would need to use a separate matching network for the +20 dBm output (which is TX only).

    The reason for this is that the +20 dBm HPA output can be matched for either Sub-1 GHz or 2.4 GHz operation, so the same matching network cannot be used for both. 

    A list of available IPCs is given in Section 8 of SWRA640F CC13xx/CC26xx Hardware Configuration and PCB Design Considerations: https://www.ti.com/lit/an/swra640f/swra640f.pdf

    The optimum load impedance for the HPA will be different depending on frequency band/desired output power - they are listed in Section 9 of SWRA640F. This means that we wouldn't recommend using the same kind of IPC as for the other outputs.

    What frequency band/output power are you planning to use the +20 dBm HPA output for?

    Regards,

    Zack