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LMK00105: HCSL input

ttd
Mastermind 9005 points

Part Number: LMK00105

Dear Technical Support Team,

Do you have any example of HCSL input circuit with LMK00105.

Input: XUN536100.000000I (IDT)

Should I insert 50Ω pull-down like below? 

Best Regards,

ttd

  • 0
    TI__Mastermind 28590 points
    Hello ttd,

    I would place series resistors close to the HCSL output for source matching if necessary - start with 0 ohm, then transmission line, then the 50 ohms to ground, series caps to LMK00105 input.
    - This allows the 50 ohms which provide the bias for the transmitter to also serve as the RF termination. Set the LMK00105 for external termination.

    73,
    Timothy