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DS125BR800A: DS125BR800A output buffer a standalone 12.5Gbps driver or a linear amplifier?

Al B
Intellectual 2990 points
Part Number: DS125BR800A
Other Parts Discussed in Thread: DS125BR820

Is the output buffer of the DS125BR800A a standalone 12.5Gbps driver or a linear amplifier?

  • 0
    TI__Guru* 76130 points
    Moving to high speed interface
  • 0
    TI__Mastermind 43795 points

    Hi Al,

    I'm not sure I understand the question.  The DS125BR800A is an output capable of driving 12.5 Gbps signals.  The output can be configured to have "non-limiting" output voltage characteristics.  By "non-limiting" I mean that the input signal amplitude will have an influence on the output voltage amplitude.  It would be a stretch to call it "linear" since the input equalizer can support relatively high levels of gain.  These high gain levels can result in some non-linear output responses since the maximum output voltage is only ~ 1.2V.

    The DS125BR820 has a more "linear" design.  The input equalization gain is lower, but the overall result offers improved transparency to input signals with Tx FIR energy.

    Regards,

    Lee