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ADC342x SYSREF

Lolo
Prodigy 250 points

Hello,

Is the SYSREF input signal considered as a LVDS signal or not ?

Thanks

Laurent

  • 0
    TI__Mastermind 44680 points
    Hi Laurent
    Most of the support team is out of office for the US Thanksgiving holiday. Someone will be able to respond to this early next week.
    Best regards,
    Jim B
  • 0
    TI__Prodigy 370 points
    Laurent,

    I beleive that you can, but I will double check with the design team.

    Thanks,
    Dave
  • 0 in reply to David Guidry
    Prodigy 250 points
    Hi Dave,

    Did you check the signal type of the sysref ?

    thanks
  • 0 in reply to Lolo
    TI__Prodigy 370 points

    Laurent,

    I just received word back from the design team on SYSREF.  We will be updating the limits for SYSREF input to:

    Spec                          Min               Typ              Max          Unit

    Common Mode          0.7               0.95             1.3            V

    Diff Swing                  0.2                0.7              1.0            V

    You should be able to connect SYSREF directly to a LVDS output (with 100 ohm termination at the end of the line) as long as you can keep the common mode less than 1.3V.  Please let me know if this answers your question.

    Thanks,

    Dave