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Question about HMC847LC5?

in this HMC847 Device Spec, i saw the this line.

- Half rate clock input

What does it mean?

if I want get 20Gbps Serial data.... output?



D1,D2,D3,D4 : 5Gbps

CKIN : 5GHz? or 10GHz?

CKOUT : 2.5GHz or 5GHz

OUT : 20Gbps


I understand the " Half rate clock input" is 5GHz...   is it right?

The device uses both rising and falling edges of the half-rate clock to serialize the data.


is it right?