Issue with DAC39J82 Operation Beyond 2G Sampling Rate

Tool/software:

Title: Issue with DAC39J82 Operation Beyond 2G Sampling Rate

Post:

      Hello, We have designed a custom board with the DAC39J82 and are encountering an issue where the DAC only works up to a 2GHz sampling rate. According to the datasheet, the DAC should support operation up to        2.8GHz. Previously, we used the DAC38J82, which worked flawlessly and adhered to the datasheet specifications.

     For the DAC39J82, we are using the same configuration as we did for the DAC38J82 but are not seeing success.

     NCO Outputs:

            We are unable to generate outputs even at 2.4G sampling rate. Baseband Data Operation via GTs: This is also not functioning as expected.

     Hardware Checks:

           The hardware has been verified and appears to be fine. Are there any specific settings or configurations unique to the DAC39J82 that we might be overlooking? If anyone has experience with the DAC39J82 and        could provide guidance or share their setup, it would be immensely helpful.

  Thank you for your assistance!

  Best regards,

  Swaroopa K