Driving an AC coupled load with ADCMP580

I would like to drive an ac-coupled differential 50 Ohm load with the ADCMP580 (or 582). The load is in fact the REF/NREF input of the HMC4069 (with DC block).

What is the best way to terminate the ADCMP580 outputs and to connect the REF/NREF input of the HMC4069?