About SYSREF Interface in the AD9625-2.5 ADC

Hi,

I am using AD9625-2.5 ADC part in my design.

I am having confusion to interface the SYSREF signal to ADC.

In the evaluation board the SYSREF interface used is as follows

In the JESD204B survival guide it is mentioned that the SYSREF & SYNC shall be DC coupled. That means the SYSREF & SYNC signal shall not have any AC coupling capacitor.

But in the Evaluation board this capacitor is present.

I have used the following configuration for SYSREF in my board schematics without any AC coupling capacitor

Kindly advice me in how to interface this SYSREF signal to the ADC.

Regards

SOUMYA