• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 20 subscribers
  • Views 309 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LMX2594: What is the current required at RF output(RFOUTA_P/RFOUTA_M) pullup

Vinayak Chabbi
Expert 1100 points
Part Number: LMX2594

Hi,

What is the current requirement for pull up at RFOUTA_P/RFOUTA_M?

What is the current requirement if I use both outputs RFOUTA and RFOUTB?

Thanks,

Vinayak

  • 0
    TI__Mastermind 28001 points

    8713.High Frequency Open Collector Outputs.pdfVinayak,

    Enabling these output buffers increase the total board current consumption on the order of 90 mA per buffer, so I am assuming most of this is going through the pull-up.  You can see this by taking an EVM and toggling the OUTA_PD bit.

    In my attached document on the outputs, I concluded that about 24 mA of DC current and about 17 mA of AC current in OUTx_PWR=31 setting.   So it looks like only a portion of that 90 mA is actually going through the pull-up.

    Regards,

    Dean