Consider a short n-channel MOSFET with Toxe = 2 nm and WT = 35 nm. Suppose
the threshold voltage (VT) for this device is simply defined to be the value of VGS at
which the normalized drain current IDS/(W/L) reaches 100 nA for VDS = 100 mV.
(1) Determine the subthreshold swing, S.
(2) If the normalized leakage current must be less than or equal to 10 pA when VGS
= 0 V and VDS = 100 mV, what is the minimum threshold voltage this device can
have?
(3) Why is a small value of S desirable?
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