Use which model of TSMC lib to design in high speed?

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usuikazkou

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Hi,
I am new to high speed circuit design, I want to design a 5Gbps clock and data recovery circuit using TSMC 0.18um tech, which model of transistor should I use to run pre simulation?
RFNMOS or just nmos? It have warning about model accuracy when I untick the guardring of rfnmos.
 

I recommend you use regular devices at slow*hot corner
to begin with, and then substitute LVT and/or RF types
in the spots where performance is being held down by
the device-type.

The part that really sees 5GHz clocking will want fast
FET styles but these will cost you area and power so
use them only when / where you need to.

One size does not fit all.
 

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