exam1_fall2009

# exam1_fall2009 - Prof Sam Palermo ECEN 325 Exam#1 October 6...

This preview shows pages 1–5. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Prof. Sam Palermo ECEN 325 Exam #1 October 6, 2009 Texas A&M University Department of Electrical and Computer Engineering ECEN 325 — Electronics Fall 2009 Exam #1 Instructor: Sam Palermo 0 Please write your name in the space provided below 0 Please verify that there are 5 pages in your exam 0 You may use one double-sided page of notes and equations for the exam 0 Good Luck! Problem Score Max Score 1 3O - - 4 Total / J, l / ’ / 2‘ '“\ Name: //Z\!/V€ ///éwﬁr/[ »/// 2 Prof. Sam Palermo ECEN 325 Exam #1 October 6, 2009 Problem 1 (30 points) Plot the magnitude and phase response of the following transfer functions. Label key points and slopes. ' 0 E 4 108 s+106 [ﬁg 1 “if???” I: I a) F(S) = '—(5——")_7_ (15 points) ‘ EU (s+10 )(s+10 ) HM“? G _ s(s+106) Prof. Sam Palermo ECEN 325 Exam #1 October 6, 2009 Problem 2 (40 points) Assume for all of problem 2 that all operational ampliﬁers are ideal. a) Assume that you have 2 inputs V1 and V2; using operational ampliﬁer(s), design a circuit that implements the following transfer function. (20 points) 5 110(5) = \$8V1 — 5V F2 4 b) For the following circuit: i. Obtain the transfer function, vo(s)/vi(s) (10 points) ii. Sketch the magnitude response if R1=R2=lkﬂ, R3=R4=10kQ, C=10nF (5 points) iii. What is the value of the input resistance? (5 points) “ ":2" 2 \ f i N J ” } .i. k I?) C ,— l0 } 4 ECEN 325 Exam #1 October 6, 2009 Prof. Sam Palermo Problem 3 (20 points) The operational ampliﬁer used in the remainder of the problem has the following open-loop transfer function 105 MS) = S 1 + ‘16 a) Sketch the open-loop magnitude response of the operational ampliﬁer. Make sure to label the unity—gain frequency. (5 points) b) The ﬁnite gain-bandwidth operational ampliﬁer from part (a) is used in the following ampliﬁer circuit. Find the expression for the closed-loop transfer function (VD/Vi). (5 points) c) What is the closed-loop -3dB frequency (bandwidth) of the total ampliﬁer circuit? (5 points) (1) Sketch the closed-loop magnitude response of the ampliﬁer circuit. (5 points) 2R 0‘. 49 c ,,,,,,,,,,,,,,,,,,,, MW.» /1 g\\\ W gar? * A /. : MMMw—wmw L ““““““““ W“ a V a {7 5‘ Prof. Sam Palermo ECEN 325 Exam #1 October 6, 2009 Problem 4 (10 points) The operational ampliﬁer for this problem has a ﬁnite slew rate of lV/us. 3) b) For an output lOOkHz sine wave, what is the maximum amplitude that can be reproduced without distortion? (5 points) .l Aura)“ l l (3 0: \\/ / / V0 L A81,“ UJJ" ._... f { Ci {.2 /~ ff)“ 1 AL; (auxi2+‘ Ci "7!“ 11/ r», L g 3‘ M _\ For an output 10V amplitude triangle wave, what is the maximum frequency that can be reproduced without distortion? (5 points) r 1 JV /4 ?3 ’iOU E. D " / r—M'“ N i v"? 4% ”””””” " :1 ” K ‘” / 52 a 7/ i e, / In iv/Wy/M, am ,,,,,,,, ,, w k l 3/. 17, s y“ /"'.:;f L, x \ H1» \ f (w, ‘1 ...
View Full Document

{[ snackBarMessage ]}

### Page1 / 5

exam1_fall2009 - Prof Sam Palermo ECEN 325 Exam#1 October 6...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online