(a) If an nMOS process has tox 5 25 nm, fi nd NA so that 5 0.5 V1y2 . (b) If tox is doubled, what is the new value of ? (c) If it is desired to restore the original value 5 0.5 V1y2 , what must the...

(a) If an nMOS process has tox 5 25 nm, fi nd NA so that 5 0.5 V1y2 . (b) If tox is doubled, what is the new value of ? (c) If it is desired to restore the original value 5 0.5 V1y2 , what must the new value of NA be? (d) If tox 5 100 nm, fi nd NA so that Vt increases by 1 V as VSB is changed from 0 V to 5 V. Hint: you may need to iterate.