Half rate OR Full rate PD FOR CDR

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radioelektra

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i have to design 4 GBPS CDR in 65nm technology...according to the area requirement i have to go for ring oscillator. please anyone can suggest whether i should go for a half rate or full rate PD...& Give the reason too why should...
Thanks in advance
 

Please give me detail about it. I don't understand about it.
 

vcoltech said:
Please give me detail about it. I don't understand about it.
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sir,
i have area constraint on the design. So i cannot use LC VCO. I have to go for a ring oscillator. I am in a confusion whether i have to use fullrate or halfrate phase detector to be used in CLOCK DATA RECOVERY SYSTEM. can u suggest me which phase detector i have to use?
 

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