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LMX2595: Treatment of Unused RF Output Ports

John Haraguchi
Prodigy 250 points
Part Number: LMX2595

If only RFoutAP is being used, can RFoutAM be disabled to save some dc current?

If RFoutB[P,M] are not used, can these pins be left unconnected or is it still recommended to supply bias to them through 50 ohm resistors?

Thanks,
John

  • 0
    TI__Genius 12705 points

    Hello,

    If RFout B is not used the outputs can be left open circuit and the output disabled by register write.

    For the complimentary output A this should not be left floating, please follow the recommended termination in the datasheet.

    As these are true differential outputs it is not possible to disable one half of the circuit without severely affecting performance.

    Regards,

  • 0 in reply to Liam Keese
    Prodigy 250 points

    Hi Liam,

    Thanks for the quick response to this question. I will bias both output A ports as advised.

    Thanks,
     John