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What is the specific meaning of process angle in analog circuits?
Ss:NMOS/PMOS Vth is high, and ff:NMOS/PMOS Vth is low;
The threshold voltage Vth directly affects the performance of the device,
Under the same conditions, when Vth is low, transconductance gm and current I will be high:
gm=k*(W/L)(VGS-Vth)，
isat= 1/2*k*(w/l)(vgs-vth)^2
GBW=gm/Cc
……