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LMX2592: REFoutA output after power up but before soft reset

Kazuhiko Hirano
Genius 16578 points

Part Number: LMX2592

Hello,

 

At LMX2592/4, right after power up but before soft reset, any undesired frequency radiation output could be at REFoutAP/M pins?

 

Best regards,

 

K.Hirano

  • 0
    TI__Genius 16845 points

    Thanks for posting on E2E. I have assigned your post to the responsible engineer. He will respond to you soon.

    Kind regards,
    Lane

  • 0 in reply to Lane Boyd
    TI__Guru** 122520 points

    Hi Hirano-san,

    If CE pin is connected to the Vcc pin. After Vcc is applied to the chips, the internal power on reset (POR) circuitry will put the chips to use the default silicon register setting. Some functional blocks will be up and running, you will see some signal at the RF output.

    If CE pin is tied LOW, after Vcc power up, the chips are in power down state and there will be no signal output.