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Original question:

SN65CML100: 1.2V CML Driver

SN65CML100: convert LVPECL to CML

Jerry Chen
Expert 5110 points
Part Number: SN65CML100

Hi,

I would like to use SN65CML100 to convert LVPECL to CML as below figure shows. Where should I add the termination resister for LVPECL?

Thanks.

  • 0
    TI__Guru**** 153831 points

    Jerry

    If you are driving a LVPECL input, you would need 50-Ω resistors on both A and B to a termination bias voltage, VT. VT is usually 2-V below the supply voltage of the driver circuit. When the driver operates from a 3.3-V supply, VT is set to approximately 1.3 V.

    Thanks

    David