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This paper proposes a technique to obtain thermal noise coefficient (γ) and corner frequency (fco) from simulation. Once determined, γ and fco can be integrated into the gm/ID 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 fco can indeed be integrated into the gm/ID design flow.