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LMX2824EPEVM: Pull-ups required on RF outputs?

John Haraguchi
Prodigy 60 points
Part Number: LMX2824EPEVM


Tool/software:

Hello (Noel),

Should resistive or inductive pull-ups be used on the LMX2824 RF outputs?

The datasheet indicates there are internal pull-ups, but the next sections discuss adding either a resistor or inductor pull-up to the RF outputs.

I'm reviewing a schematic that added a 50-ohm pull-up to an output where the doubler will be used.  Is this recommended?

Thanks,

John

  • 0
    TI__Guru** 111720 points

    Hi John,

    50Ω pull-up are embedded, no external resistor or inductor pull-up is required. This chip has been design to provide higher output power than the previous generations, inductor pull-up is not needed any more.