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ADC3660EVM: what is the interface and voltage on InternalDCLKIN_P

Part Number: ADC3660EVM
Other Parts Discussed in Thread: ADC3660, CDCE6214

Tool/software:

Hi team,

ADC3660 DCLKIN is from CDCE6214 OUT4_P, which is labeled InternalDCLKIN_P.

What is the output format and voltage on InternalDCLKIN_P? I'm concern because the DCLKIN abs max is 2.1V and CDCE6214's supply is 3.3V. Also PRIREF_P is DNP, so it is not biased.

REgards,

Hayashi

  • Hayashi-san,

    The outputs on the CDCE6214 can be configured as either LVDS or LP-HCSL.  The LP-HCSL  maximum VOH is 850mV and the maximum possible the LVDS VOH is 1.825V.  This is well below the 2.1 abs max on the DCLKIN.

    Regards,

    Geoff