In: Electrical Engineering
An N-Channel device has K’n = 50 µA / V^2, Vt = 0.8 V and W/L = 20. The device is operating as a switch for small Vds, utilizing a control voltage Vgs in the range 0 V to 5 V. Find the switch closures resistance, Rds and closure voltage, Vds obtained when Vgs = 5 V and Id = 1 ma. Recalling that Up (Miu)= 0.4 µ(n). What must W/L be for a p-channel device that provides the same performance as the n-channel device in this application?