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ADS4249: LVDS DC characteristics difference between ADS4249 and FPGA

JH Shin
Mastermind 7085 points
Part Number: ADS4249

Hello,

My customer would like to receive the LVDS output of the ADS4249 on an FPGA.

They found differences in LVDS DC characteristics between the ADS4249 and FPGA, as shown below.

Could the difference between the two DC specfications cause problems with the LVDS interface?

Is there a way to adjust the Vocm level on the ADS4249 ?

Thank you.

JH

  • 0
    TI__Guru* 91947 points

    JH,

    I do not see an issue with these specs. The ADC values are always within the spec of the FPGA. You cannot adjust the Vocm level of the ADC. If you are concerned about the Vocm, you could AC couple the data lines. Another option is to use a LVDS-to-LVDS repeater device.

    Regards,

    Jim