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DS25BR100: the condition of Equalization Level

Hirotaka Matsumoto
Guru 27585 points
Part Number: DS25BR100

Hi all

Would you mind if we ask DS25BR100?

There is the description "Medium (Approx. 8 dB at 1.56 GHz)" on the datasheet P2.
In case of datarate=3.0GHz, is it possible to equalize with 8dB?

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Mastermind 43795 points

    Hi Hirotaka,

    The DS25BR100 CTLE gain is typical ~ 8 dB @ 1.56 GHz.  This is equal to 8 dB of gain for a 3.125 Gbps data stream since the nyquist frequency of the 3.125 Gbps data is 1.56 GHz.

    The CTLE works across a relatively broad range of datarates - from approximately 1 Gbps up to the maximum 3.125 Gbps.  At the lower data rates near 1 Gbps, the CTLE gain will be less than 8 dB.

    For your case with a 3.0 Gbps data rate, the CTLE will provide ~ 8 dB of gain 

    Regards,

    Lee  

  • 0 in reply to Lee Sledjeski
    Guru 27585 points

    Quote san

    Thank you for your reply!!
    We are sorry that we misunderstand the denomination between bps and Hz.
    OK, we got it.

    Kind regards,

    Hirotaka Matsumoto