aaron_do
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Hi all,
I understand that Cgd is split into three terms. One is Cf and is the fringing capacitance, one is Cgd,p and is the parasitic capacitance due to gate drain overlap, and the third is the Cgd intrinsic to the device. Have I got that right? Is the third component the capacitance between the gate and the channel?
Ok that aside, i'm wondering in the saturation region, we can calculate Cgd, Cgs, and Cgb. But in the subthreshold region, we can only calculate Cgb. This transition seems to be almost immediate on the threshold. If i'm dealing with a circuit operating around the threshold, should I assume Cgd = 0 (the third component only)?
thanks, Aaron
oops...wrong category...
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