Hi,
   I am currently designing a CDR circuit. After the VCO, do i am trying to have a saturating amplifier to make the edges of the clock signal sharp.
I am finding it difficult to get sharp slope in my 180nm technology with clock signal at 6.5G.
   Can you please highlight any disadvantge if i directly use sine wave output of VCO as clock in my CDR circuit.

Regards,
Amit