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CC1200 output power stable

Nomo
Guru 16800 points
Other Parts Discussed in Thread: CC1200

Hello,

In my customer's design, the stabilization of the output power is required, and then I have some questions for CC1200.

1. Please let me know whether CC1200 has power supply pin for PA.
   I expect AVDD_PFD_CHP or AVDD_RF is the power supply pin for PA.

2. If CC1200 has power supply pin for PA and constant voltage can be supplied to the pin, is the output power stable?

Best Regards,

Nomoto

  • 0
    TI__Mastermind 36395 points
    Nomoto,

    The PA is supplied thru the inductor that goes from VDD to the PA pin, that means the PA is supplied from the output. Yes, supplying a regulated supply for this pins is a good idea.

    The AVDD_PFD_CHP and AVDD_RF nets supply internal circuits of the CC1200, again these needs are susceptible to noise.

    Regards,
    /TA