Determination of γ and fco for gm/ID based CMOS circuit design

This paper proposes a technique to obtain thermal noise coefficient (γ) and corner frequency (f
_co
) from simulation. Once determined, γ and f
_co
can be integrated into the g
_m
/I
_D
design flow to simplify CMOS analog circuit design. A folded cascode operational transconductance amplifier (OTA) is designed to provide a point of comparison. A 10% error in input noise and a 25% error in output noise show that γ and f
_co
can indeed be integrated into the g
_m
/I
_D
design flow.