Reading the datasheet I am unsure of my understanding : what is the maximum sampling rate of a single ADC ?
It is unclear (to me) whether it is 3 or 6 Gsps ?
The same question would hold for the AD9081 : 1.5 or 4Gsps ?
Also, can it support baseband I/Q operation at the ADC input and DAC output ? In such a mode, is it possible to use the DUC/DDC ?
What does observation Rx mean ? I suppose it is intended for channel feedback loop (DPD, equalization, etc...) but how does it translates ? How does it affect my design if I want to use the ADCs as independent input channels ?