EEE4306_Quiz_3_Solution_2010

EEE4306_Quiz_3_Solution_2010 - EEE 4306 QUIZ III, 100...

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Unformatted text preview: EEE 4306 QUIZ III, 100 Points Name: 60 Minutes. Open Note, Open Book, 3/1/10 UF ID Circuit Element Values, RE = 150 (2, R135 = 750 (2, R137 = 100 Q, RL = 15K Q, RC = 10K (2, CA = 4pF, C3 = 4pF, Cx = 00F. BJT Parameters: [3 = 200, VA = 100V, BJT base-emitter VBEON 5 0.7V Assume and BJT devices (Q1, Q2, Q3, Q4, Q5, Q6, and Q7) are in linear active. MOS Parameters: VTN= 1 V, VTp= -1 V, k = 16mA/V2 = ll/2unCox(Wn/Ln) M3, and M = l/2upCox(Wp/Lp) , 9» = 0.02. Assume that the NMOS (M1, M2,) are in saturation. VSUPPLY = 15V VSUPPLY = '15V a) Biasing Calculations: (10 points): Find Rx so that the differential pair has 2 mA bias through the BI T current source. b) A ethti lgllsaai - ‘ ssum a r w 7: III/[7’40— ICS “gfilcs 3 Find R56 SO that 1C7 =1mA_ ’2'”! /4 I a 7712/; . ' C r » / A RX=M S lgy/L M v I95; ‘ v "" I z RE6=M 125, C5 "' .. V _ 1/ p “9 1‘7 137 BE ..: /m A E5- : £5 7 [paw/L V57 '-'= MAC/857 + 0.7V: a%l/ b) Find the midband input small signal stage gain, the Stage two gain and the overall Gain, (70 points). AStagel=Knllf4sz = ‘Z , = an AA, , (imagine/cal] 32,7 15/2,) 2: g ' AStage2:?I:2: i2Eé (V777 6857) "a jig.- (pen/g” WM H256 M ((117 4‘5 £57) 1+fiM7fiF7 . 35062; = ., W , ODEII/félf) V m“ 5%?— HLL/umA/u 4'0pr A A0verall =Vm1_V;n2 = :- (Q, ’ : ‘— L/é p 7L _ a a r o g, cm @0255, I/(wrr74e/ag7) , mfn+ 2oofiéw2/l [57:12 + 2w #40,»; e7 2: W c) DRAW a Cc = 40 pF on the circuit that gives the best (highest level) of compensation to the op amp. (5 Points) / (1) Using the circuit in part c) Show why or why not that this circuit has a 45 degree phase margin (15 points). I i w?! :- 6m7I92 (4: [2.” 3ml4 ’4/4‘12 ‘é/ppFJVi/éjl. :_ z 7/cV/s R2 3 an ELM/907 .= gym (WM/4) Rt 7" 2011' fare” {2114 5 We: A'Q/l :: 3703/1711. 27/9J1/S ’4 Z?{/D i/S v.- —- 4,4. = ‘WwCfi +<5m74/w%2//: {2, s (WP) (WP) +‘ [[99 Ffiprfl/ka :. 7:;5/ /0?v/5 YES W0 ( WP; ...
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This note was uploaded on 02/23/2012 for the course EEE 4306 taught by Professor Eisenstadt during the Fall '08 term at University of Florida.

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EEE4306_Quiz_3_Solution_2010 - EEE 4306 QUIZ III, 100...

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