ECE302_hw5_Solution

ECE302_hw5_Solution - p Tp GS p p OX p DSp V V V L W C V V...

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NC State University Department of Electrical and Computer Engineering Problem Set 5 ECE-302 Spring 2005 1a) R = 10 k 1b) R = 10 k
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E5.5 (a) When V in = 0, PMOS works in triode region: = × × = + = k V V L W C R Tp GS p p ox p p 2 ) 1 5 ( 2 10 25 1 ) ( 1 µ V V R R R V DD p 6 . 3 5 2 5 5 max = × + = × + = So: V OH = V max = 3.6V When PMOS is cut off, V min = 0 V OL = V min = 0V In transition region, when PMOS is in saturation region: ) ( R r g v v A op mp in out v = = When V IN =V M : 2 2 ) ( 2 ) 1 ( ) ( 2 Tp M DD p p OX p DS p Tp GS p p OX p DSp V V V L W C V V V L W C I + = + + = λ R V M = Î 0 80 56 5 2 = + M M V V Î V V M 68 . 1 = So A R V I M DSp 336 5 68 . 1 = = = S I L W C g DSp p p ox p m 83 . 289 336 2 10 25 2 2 = × × × = = = = 1 ) ( DSp p op I r D I DS r o S G V GS g mp V GS R
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45 . 1 5 29 . 0 ) ( = × = = = R r g v v A op mp in out v (b) When V in = 0, PMOS works in triode region: = × × = + = k V V L W C R Tp GS p p ox p p 2 ) 1 5 ( 2 10 25 1 ) ( 1 µ V V R R R V DD p 63 . 4 5 2 25 25 max = × + = × + = So: V OH = V max = 4.63V When PMOS is cut off, V min = 0 V OL = V min = 0V In transition region, when PMOS is in saturation region: When V IN =V M : 2 2 ) ( 2 ) 1 ( ) ( 2 Tp M DD p p OX p DS
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Unformatted text preview: p Tp GS p p OX p DSp V V V L W C V V V L W C I + = + + = R V M = 400 216 25 2 = + M M V V V V M 69 . 2 = So A R V I M DSp 6 . 107 25 69 . 2 = = = S I L W C g DSp p p ox p m . 164 6 . 107 2 10 25 2 2 = = = = = 1 ) ( DSp p op I r 1 . 4 25 164 . ) ( = = = = R r g v v A op mp in out v E5.6 (a) A V V V V L W C I DS DS Ton GS n n OX n D 250 ) 2 1 . 1 4 )( 5 . 1 3 )( 50 ( ) 2 ( = = = (b) When V min = 1V, A R V V I I DD R D 160 25 1 5 min = = = =...
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ECE302_hw5_Solution - p Tp GS p p OX p DSp V V V L W C V V...

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