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Original question:

LMK01801: LCPECL emitter resistor calc for reduced output common-mode setup

LMK01801: LCPECL emitter resistor calc for reduced output common-mode setup

Joerg Reins
Prodigy 90 points
Part Number: LMK01801

Hi Timothy,

This is valuable feedback, much appreciated.

Just to understand your proposed circuit, is this simple voltage divider still recommended for lower common-mode voltages below 1V (let's say 0.5V) as well?

Thanks again,
Joerg

  • 0
    TI__Mastermind 28550 points
    Hello Joerg,

    Yes, it can be used for the lower Vcms as well... of course the more you divide down the smaller your amplitude, but LCPECL does give you the best starting point for voltage division by doing what it can to minimize Vcm and maximize swing from which you can divide down.

    73,
    Timothy