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MidtermExam#1_2006

# MidtermExam#1_2006 - Name 6 L Vcfw Ti cfw'Jr EE 482...

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Name: :; 6 L V{ Ti {)!'Jr -------------- EE 482 - Electronics II Mid-Term Exam # 1 Thursday, June 22, 2006 Use only these pages for your calculations and answers. There are 50 total points. Answer all questions. (15 points) 1. This problem requires DC analysis of the circuit shown below. PMOS device data: k p = 400 J1A/V2; V TPO = -1.5 V; A p = 0.04 V-I. NMOSdevice data: k n = 400 J1A/V2; V TNO = +0.5 V; An = 0.02 V-I. x lOV 3MQ --':> 7V ~OS, ~ 10, i7 V ~ V)(-j ~-----------------_/ CGc cJ • V~\$I ';> 'Vvf,,,,k, / V w "? YSDr;42. -/ 2. Ve:,SI '> Y TrJ ./ V~(""2 ? -V,(! / (a)Determine the voltage at node X*. VerifYany assumptions that you make. [13 pts} Vr;c- ::= ~ Y \j G :, -= d- V ~ 2- ) I Vs&" + V Tp -= l,c; V -= Y (,r; - V TrJ ( fi /' I" T - 1"' r l lr ' /< , ( '~D; - J.>!) 2.) C() ,) k/ "). 5 MQ 1~( VG'; I ..c V 7 IV) :1 [I t A~ (V]J! - V J554 )] ==; ~V~G2 + Vr f) 0+ /p (V:o; - V,7J;dJ] , (/ _ ?--v >" (V0~! -I,'S) = AI? (Vc;Vz- -liS) VD~I-('~ ., :f.(V SD2 -I,S} V S f)2-:: \""(J -Vos, h 7 k'VL)'O,D V us I - I, C; '} (( D - Vp S I -I, S') =) (b)Suppose we wished to center the voltage at node X (at 5 V). This can most easily be accomplished by ch . 'the relative sizes (Wi L) of MI and M2. Would you make I larger r smaller relative to M2? Briefly explain your reasoning.

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