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For an NMOS device operating in saturation, plot W/L versus VGS−VTH if , a. Id is constant b. gm is constant.
1 Answer
written 2.4 years ago by |
Solution:
gn=δI0δVGs|Vos−constant∴gm=μncoswL(VGS−VrH)−(1) also gm=√2lncosW/L Id ∴gm=2ID(VGS−VΓH)...(2)
From (1) & (2)
μncosωL(VGS−VTH)=2IDVGSS−ViH∴(VGS−VTH)2=2IDμncosWL∴WL=2IDμnCos(VGs−V/H)2...(a)
From (1)
WL=9mln(0x(VGS−VrH)− (B)
a) When ID is constant,
b) Whengm is constant,