ECE 3050A, Spring 2004 Page 1. FINAL EXAMINATION - SOLUTIONS (Average score = 78/100) R 2 = R 1 =

Size: px
Start display at page:

Download "ECE 3050A, Spring 2004 Page 1. FINAL EXAMINATION - SOLUTIONS (Average score = 78/100) R 2 = R 1 ="

Transcription

1 ECE 3050A, Spring 2004 Page Problem (20 points This problem must be attempted) The simplified schematic of a feedback amplifier is shown. Assume that all transistors are matched and g m ma/v and r ds. (a.) Where should the switch be connected for negative feedback? (b.) Use the method of feedback analysis to find v 2 /, in /i, and out v 2 /. (a.) A quick check of the ac voltage changes around the loop show that the switch should be connected to A. FINAL EXAMINATION SOLUTIONS (Average score 78/00) i M M2 V DD A B 3 M3 v 2 S04FEP (b.) This feedback circuit is seriesseries. The units of A are A/V and the units of β are V/A. F z 2f f f i f 0 3 The circuit for calculating the smallsignal openloop gain is, v gs3 ' v s ' g m3 v gs3 ' 2 v g3 ' 2v i 3 o ' gs3 ' 4 g m v gs ' S04FES A i o ' v s ' i o ' v gs3 ' v gs3 ' v g3 ' v g3 ' v gs ' v gs ' v s ' (g m3 ) g m3 (g 4 m 2 ) 2 A i o ' v s ' (ms)(0.5)(5) 2.5mS A F i o A vs AF 2.5mS ms v 2 v v 2 v v 2 s io i o v s 4 (0.74mS) 0.74 V/V v 2 vs 0.74 V/V is not influenced by feedback so i o 4 (/g m3 ) 2kΩ of 2kΩ(2.5) 7kΩ out v 2 ( of 4 ) 7kΩ 875Ω v 2 875Ω

2 ECE 3050A, Spring 2004 Page 2 Problem 2 (20 points This problem must be attempted) This problem deals with finding the openloop gain and it application. The following questions are independent of each other. (a.) Find the loop gain of the feedback circuit shown, T(s), if the amplifier is an ideal voltage amplifier with a gain of K. K K C skc (b.) If T(s) s 2 2 C 2 2Cs, find f osc and C the value of K necessary for oscillation. S04Q3P (c.) If T(s) has the following properties: T(0) 0 and two poles at s 00, what is the phase margin of this feedback circuit? (a.) Opening the loop gives, T(s) V K in (/sc) K(/sC) (/sc) K 2 Cs (sc)(sc) K 2 Cs s 2 2 C 2 s2c T(s) K 2 Cs s 2 2 C 2 s2c (b.) T(s) skc s 2 2 C 2 2Cs jωkc T(jω) ω 2 2 C 2 jω2c or T(jω) jωkc ω 2 2 C 2 jω2c j0 f osc 2πC and K 2 (c.) We could plot a Bode plot and estimate the phase margin or do the following: 0 T(jω) ω Find the unitygain frequency from, ω 2 c 00 2 (0 ) ω c 00 2 or ω c 300 rads/sec. The phase margin can be expressed as, PM 80 2tan (7.56 ) 36.87

3 ECE 3050A, Spring 2004 Page 3 Problem 3 (20 points This problem is optional) A BJT amplifier is shown. Assume that the BJT has the small signal parameters of β F 00, r π, and V A. a.) Find the midband voltage gain of this amplifier, /. b.) Find the value of the lower 3dB frequency, f L, in Hz, using any method that is appropriate. The smallsignal model for this problem is: S04FEP2 3 V EE V CC C 2 0.µF C 00µF I b rπ βi b C 2 (a.) If the capacitors are large, or the frequency large, 3 C 2 4 the midband gain is, V in I b I b V F04FES3 in V [β( in 2 4 )] r (500)(0.5) 250 V/V π (b.) Since the capacitors are independent, let us choose the shortcircuit time constant approach. C 3 r π β 2 0 kω 9.42Ω p C 55 rads/sec. C C2 2 20kΩ p 2 C rads/sec. C kΩ There is also a zero due to 3 and C given as /( 3 C ) 0 rads/sec. ω L (0 2 ) rads/sec. or f 3dB 4.2 Hz

4 ECE 3050A, Spring 2004 Page 4 Problem 4 (20 points This problem is optional) a.) If the g m of the MOSFET is 0.mA/V, find the midband gain and the location of all zeros and poles of the circuit shown. b.) If the amplifier above has two zeros at the origin and a pole at rads/sec and 4 rads/sec., what is the lower 3dB frequency in Hz?.) Smallsignal model: C µf G MΩ S04FEP4 V DD S C2 0µF L V SS C G C G g m (/g m ) s (/g m ) s L V g V s s gm V g g m V s V g gm V g x L sc 2 g m G G s s 3 s 5k C 2 s M C V s s C 2 C 2 L L F02Q09S 5k M sc 2 5k sc 2 M sc 3 s s 6.67 s s MGB 0.333, two zeros at 0 rads/sec. and poles at rad/sec and 6.67 rads/sec. 2.) ω L p 2 p2 2 2(z 2 z2 2 ) (0) rads/sec. f L Hz

5 ECE 3050A, Spring 2004 Page 5 Problem 5 (20 points This problem is optional) The FET in the amplifier shown has g m ma/v, r d, C gd 0.5pF, and C gs 0pF. (a.) Find the midband gain, /. (b.) Find the upper 3dB frequency, f H, in Hz. (Note: You cannot use the Miller's theorem on this problem because there is no bridging capacitor.) The small signal model for the high frequency range is shown where g m V gs 3 20kΩ C 20µF S04FEP5 V DD C 2 µf 20kΩ V SS Vin 2 V gs C gs C gd 34 Because the capacitors are independent, probably the best way to work this problem is by superposition (opencircuit time constants). Therefore, C gs : C gd : Cgs 2 (/g m ) K K K 333Ω ω Cgs Cgd 34 ω Cgd ω H C 200 Mrads/sec. gd 66 Mrads/sec Mrads/sec 2 200Mrads/sec f L 26.48MHz The midband gain is given as C 300 Mrads/sec. gs 333Ω MBG 2 g m 2 g m g m (0) 3.33V/V

6 ECE 3050A, Spring 2004 Page 6 Problem 6 (20 points This problem is optional). A feedback amplifier is shown. Use the methods of feedback analysis to find the numerical values of v 2 /, /i, and v 2 /. Assume that all transistors are matched and that V t 25mV, β (of the BJT) 00, I C I C2 i 00µA, and r o. An openloop version of the feedback amplifier is shown below. The openloop ac schematic is given as, i ' Q Q2i f ' S04FEP6 F g 2F i F ' v 2 ' ' ' 0 3 Small signal BJT parameters are: I C g m 25mV 4mS and r π β g 25kΩ m i ' i b2 ' ' r π2 i b ' βi b2 ' v 2 ' 3 r π βi b ' F04FES6A v 2 ' i ' v 2 ' i i b2 ' i b ' b2 ' i b ' i ' [(β)( 3 4 )] β 2 2 r π2 (β)( 3 4 ) 3 3 r π (0 0K 0K) 00 0K 540K 0K 0K25K (505K)(.852)(0.286) 267.2kΩ T v 2 ' i ' 267.2kΩ v 2 T i F 267.2KΩ T kΩ in in 4 (r π ) 0K 25K 7.4kΩ, inf F 7.4kΩ T Ω i inf Ω v 2 v v 2 i i v 9.64K V/V out 3 4 r π2 2 β ( )kΩ 324Ω v 2 out i2 F 324Ω T Ω ' v 2 ' 4 F04FES6 V CC Q 3 V CC Q2 v 2

7 ECE 3050A, Spring 2004 Page 7 Problem 7 (20 points, this problem is optional) An C oscillator is shown. Express the frequency of oscillation of this circuit in terms of the components and evaluate. What is the value of the voltage amplifier gain, K, necessary for oscillation? In words, how is the amplitude of oscillation determined? Open the loop as follows, C 0.0µF K 00kΩ C 0.0µF 00kΩ K 00kΩ C 0.0µF K S04FEP7 Now, V x K 00kΩ C 0.0µF T(s) V x V x ' K(/sC) (/sc) 3 T(jω) K 00kΩ C 0.0µF K 3 s 3 3 C 3 3s 2 2 C 2 3sC K 00kΩ C 0.0µF S04FES7 K 3 K 3 sc (sc) 3 K 3 ( 3ω 2 2 C 2 ) jω[3c ω 2 3 C 3 ] j0 V x ' 3C ω osc 2 3 C 3 ω osc 3 C and K 3 3ω 2 osc 2 C 2 K 3 9 K3 8 K 8/3 2 K 2 Substituting the values gives f osc 3 2π Hz (,732 rads/sec) The amplitude of the oscillation is determined by the amplifiers K having a nonlinear transfer function as illustrated. The slope for small values is greater than 2 while the slope for large values is less than 2. The amplitude of the oscillator will stabilize where the effective gain is exactly 2. K2 F04FES7A

ECE 6412, Spring Final Exam Page 1

ECE 6412, Spring Final Exam Page 1 ECE 64, Spring 005 Final Exam Page FINAL EXAMINATION SOLUTIONS (Average score = 89/00) Problem (0 points This problem is required) A comparator consists of an amplifier cascaded with a latch as shown below.

More information

Final Exam. 55:041 Electronic Circuits. The University of Iowa. Fall 2013.

Final Exam. 55:041 Electronic Circuits. The University of Iowa. Fall 2013. Final Exam Name: Max: 130 Points Question 1 In the circuit shown, the op-amp is ideal, except for an input bias current I b = 1 na. Further, R F = 10K, R 1 = 100 Ω and C = 1 μf. The switch is opened at

More information

Homework Assignment 08

Homework Assignment 08 Homework Assignment 08 Question 1 (Short Takes) Two points each unless otherwise indicated. 1. Give one phrase/sentence that describes the primary advantage of an active load. Answer: Large effective resistance

More information

ECE-343 Test 2: Mar 21, :00-8:00, Closed Book. Name : SOLUTION

ECE-343 Test 2: Mar 21, :00-8:00, Closed Book. Name : SOLUTION ECE-343 Test 2: Mar 21, 2012 6:00-8:00, Closed Book Name : SOLUTION 1. (25 pts) (a) Draw a circuit diagram for a differential amplifier designed under the following constraints: Use only BJTs. (You may

More information

CE/CS Amplifier Response at High Frequencies

CE/CS Amplifier Response at High Frequencies .. CE/CS Amplifier Response at High Frequencies INEL 4202 - Manuel Toledo August 20, 2012 INEL 4202 - Manuel Toledo CE/CS High Frequency Analysis 1/ 24 Outline.1 High Frequency Models.2 Simplified Method.3

More information

55:041 Electronic Circuits The University of Iowa Fall Final Exam

55:041 Electronic Circuits The University of Iowa Fall Final Exam Final Exam Name: Score Max: 135 Question 1 (1 point unless otherwise noted) a. What is the maximum theoretical efficiency for a class-b amplifier? Answer: 78% b. The abbreviation/term ESR is often encountered

More information

University of Toronto. Final Exam

University of Toronto. Final Exam University of Toronto Final Exam Date - Dec 16, 013 Duration:.5 hrs ECE331 Electronic Circuits Lecturer - D. Johns ANSWER QUESTIONS ON THESE SHEETS USING BACKS IF NECESSARY 1. Equation sheet is on last

More information

Electronics II. Final Examination

Electronics II. Final Examination The University of Toledo f17fs_elct27.fm 1 Electronics II Final Examination Problems Points 1. 11 2. 14 3. 15 Total 40 Was the exam fair? yes no The University of Toledo f17fs_elct27.fm 2 Problem 1 11

More information

ECE 6412, Spring Final Exam Page 1 FINAL EXAMINATION NAME SCORE /120

ECE 6412, Spring Final Exam Page 1 FINAL EXAMINATION NAME SCORE /120 ECE 6412, Spring 2002 Final Exam Page 1 FINAL EXAMINATION NAME SCORE /120 Problem 1O 2O 3 4 5 6 7 8 Score INSTRUCTIONS: This exam is closed book with four sheets of notes permitted. The exam consists of

More information

V in (min) and V in (min) = (V OH -V OL ) dv out (0) dt = A p 1 V in = = 10 6 = 1V/µs

V in (min) and V in (min) = (V OH -V OL ) dv out (0) dt = A p 1 V in = = 10 6 = 1V/µs ECE 642, Spring 2003 - Final Exam Page FINAL EXAMINATION (ALLEN) - SOLUTION (Average Score = 9/20) Problem - (20 points - This problem is required) An open-loop comparator has a gain of 0 4, a dominant

More information

EE105 Fall 2014 Microelectronic Devices and Circuits

EE105 Fall 2014 Microelectronic Devices and Circuits EE05 Fall 204 Microelectronic Devices and Circuits Prof. Ming C. Wu wu@eecs.berkeley.edu 5 Sutardja Dai Hall (SDH) Terminal Gain and I/O Resistances of BJT Amplifiers Emitter (CE) Collector (CC) Base (CB)

More information

Exact Analysis of a Common-Source MOSFET Amplifier

Exact Analysis of a Common-Source MOSFET Amplifier Exact Analysis of a Common-Source MOSFET Amplifier Consider the common-source MOSFET amplifier driven from signal source v s with Thévenin equivalent resistance R S and a load consisting of a parallel

More information

ECE-342 Test 3: Nov 30, :00-8:00, Closed Book. Name : Solution

ECE-342 Test 3: Nov 30, :00-8:00, Closed Book. Name : Solution ECE-342 Test 3: Nov 30, 2010 6:00-8:00, Closed Book Name : Solution All solutions must provide units as appropriate. Unless otherwise stated, assume T = 300 K. 1. (25 pts) Consider the amplifier shown

More information

Lecture 090 Multiple Stage Frequency Response - I (1/17/02) Page 090-1

Lecture 090 Multiple Stage Frequency Response - I (1/17/02) Page 090-1 Lecture 9 Multiple Stage Frequency esponse I (/7/2) Page 9 LECTUE 9 MULTIPLESTAGE FEQUENCY ESPONSE I (EADING: GHLM 56527) Objective The objective of this presentation is:.) Develop methods for the frequency

More information

55:041 Electronic Circuits The University of Iowa Fall Exam 2

55:041 Electronic Circuits The University of Iowa Fall Exam 2 Exam 2 Name: Score /60 Question 1 One point unless indicated otherwise. 1. An engineer measures the (step response) rise time of an amplifier as t r = 0.35 μs. Estimate the 3 db bandwidth of the amplifier.

More information

ECEN 326 Electronic Circuits

ECEN 326 Electronic Circuits ECEN 326 Electronic Circuits Stability Dr. Aydın İlker Karşılayan Texas A&M University Department of Electrical and Computer Engineering Ideal Configuration V i Σ V ε a(s) V o V fb f a(s) = V o V ε (s)

More information

Refinements to Incremental Transistor Model

Refinements to Incremental Transistor Model Refinements to Incremental Transistor Model This section presents modifications to the incremental models that account for non-ideal transistor behavior Incremental output port resistance Incremental changes

More information

ECE 546 Lecture 11 MOS Amplifiers

ECE 546 Lecture 11 MOS Amplifiers ECE 546 Lecture MOS Amplifiers Spring 208 Jose E. Schutt-Aine Electrical & Computer Engineering University of Illinois jesa@illinois.edu ECE 546 Jose Schutt Aine Amplifiers Definitions Used to increase

More information

ECE 523/421 - Analog Electronics University of New Mexico Solutions Homework 3

ECE 523/421 - Analog Electronics University of New Mexico Solutions Homework 3 ECE 523/42 - Analog Electronics University of New Mexico Solutions Homework 3 Problem 7.90 Show that when ro is taken into account, the voltage gain of the source follower becomes G v v o v sig R L r o

More information

Assignment 3 ELEC 312/Winter 12 R.Raut, Ph.D.

Assignment 3 ELEC 312/Winter 12 R.Raut, Ph.D. Page 1 of 3 ELEC 312: ELECTRONICS II : ASSIGNMENT-3 Department of Electrical and Computer Engineering Winter 2012 1. A common-emitter amplifier that can be represented by the following equivalent circuit,

More information

Circle the one best answer for each question. Five points per question.

Circle the one best answer for each question. Five points per question. ID # NAME EE-255 EXAM 3 November 8, 2001 Instructor (circle one) Talavage Gray This exam consists of 16 multiple choice questions and one workout problem. Record all answers to the multiple choice questions

More information

Lecture Stage Frequency Response - I (1/10/02) Page ECE Analog Integrated Circuits and Systems II P.E.

Lecture Stage Frequency Response - I (1/10/02) Page ECE Analog Integrated Circuits and Systems II P.E. Lecture 070 Stage Frequency esponse I (/0/0) Page 070 LECTUE 070 SINGLESTAGE FEQUENCY ESPONSE I (EADING: GHLM 488504) Objective The objective of this presentation is:.) Illustrate the frequency analysis

More information

ECE-343 Test 1: Feb 10, :00-8:00pm, Closed Book. Name : SOLUTION

ECE-343 Test 1: Feb 10, :00-8:00pm, Closed Book. Name : SOLUTION ECE-343 Test : Feb 0, 00 6:00-8:00pm, Closed Book Name : SOLUTION C Depl = C J0 + V R /V o ) m C Diff = τ F g m ω T = g m C µ + C π ω T = g m I / D C GD + C or V OV GS b = τ i τ i = R i C i ω H b Z = Z

More information

Electronics II. Final Examination

Electronics II. Final Examination f3fs_elct7.fm - The University of Toledo EECS:3400 Electronics I Section Student Name Electronics II Final Examination Problems Points.. 3 3. 5 Total 40 Was the exam fair? yes no Analog Electronics f3fs_elct7.fm

More information

Electronics II. Midterm II

Electronics II. Midterm II The University of Toledo f4ms_elct7.fm - Section Electronics II Midterm II Problems Points. 7. 7 3. 6 Total 0 Was the exam fair? yes no The University of Toledo f4ms_elct7.fm - Problem 7 points Given in

More information

Bipolar junction transistors

Bipolar junction transistors Bipolar junction transistors Find parameters of te BJT in CE configuration at BQ 40 µa and CBQ V. nput caracteristic B / µa 40 0 00 80 60 40 0 0 0, 0,5 0,3 0,35 0,4 BE / V Output caracteristics C / ma

More information

Lecture 37: Frequency response. Context

Lecture 37: Frequency response. Context EECS 05 Spring 004, Lecture 37 Lecture 37: Frequency response Prof J. S. Smith EECS 05 Spring 004, Lecture 37 Context We will figure out more of the design parameters for the amplifier we looked at in

More information

ECE137B Final Exam. There are 5 problems on this exam and you have 3 hours There are pages 1-19 in the exam: please make sure all are there.

ECE137B Final Exam. There are 5 problems on this exam and you have 3 hours There are pages 1-19 in the exam: please make sure all are there. ECE37B Final Exam There are 5 problems on this exam and you have 3 hours There are pages -9 in the exam: please make sure all are there. Do not open this exam until told to do so Show all work: Credit

More information

Lecture 120 Compensation of Op Amps-I (1/30/02) Page ECE Analog Integrated Circuit Design - II P.E. Allen

Lecture 120 Compensation of Op Amps-I (1/30/02) Page ECE Analog Integrated Circuit Design - II P.E. Allen Lecture 20 Compensation of Op AmpsI (/30/02) Page 20 LECTURE 20 COMPENSATION OF OP AMPS I (READING: GHLM 425434 and 624638, AH 249260) INTRODUCTION The objective of this presentation is to present the

More information

ECE Analog Integrated Circuit Design - II P.E. Allen

ECE Analog Integrated Circuit Design - II P.E. Allen Lecture 290 Feedback Analysis using Return Ratio (3/20/02) Page 2901 LECTURE 290 FEEDBACK CIRCUIT ANALYSIS USING RETURN RATIO (READING: GHLM 599613) Objective The objective of this presentation is: 1.)

More information

PRACTICE PROBLEMS FOR CMOS ANALOG CIRCUIT DESIGN, 2 ND EDITION

PRACTICE PROBLEMS FOR CMOS ANALOG CIRCUIT DESIGN, 2 ND EDITION Practice Problems (5/27/07) Page PRACTICE PROBLEMS FOR CMOS ANALOG CIRCUIT DESIGN, 2 ND EDITION TECHNOLOGY Problem (044430E3P5) The following questions pertain to a standard npn BJT process. a.) Give the

More information

Chapter 9 Frequency Response. PART C: High Frequency Response

Chapter 9 Frequency Response. PART C: High Frequency Response Chapter 9 Frequency Response PART C: High Frequency Response Discrete Common Source (CS) Amplifier Goal: find high cut-off frequency, f H 2 f H is dependent on internal capacitances V o Load Resistance

More information

Lecture 150 Simple BJT Op Amps (1/28/04) Page 150-1

Lecture 150 Simple BJT Op Amps (1/28/04) Page 150-1 Lecture 50 Simple BJT Op Amps (/28/04) Page 50 LECTURE 50 SIMPLE BJT OP AMPS (READING: TextGHLM 425434, 453454, AH 249253) INTRODUCTION The objective of this presentation is:.) Illustrate the analysis

More information

Lecture 050 Followers (1/11/04) Page ECE Analog Integrated Circuits and Systems II P.E. Allen

Lecture 050 Followers (1/11/04) Page ECE Analog Integrated Circuits and Systems II P.E. Allen Lecture 5 Followers (1/11/4) Page 51 LECTURE 5 FOLLOWERS (READING: GHLM 344362, AH 221226) Objective The objective of this presentation is: Show how to design stages that 1.) Provide sufficient output

More information

Electronics II. Final Examination

Electronics II. Final Examination The University of Toledo f6fs_elct7.fm - Electronics II Final Examination Problems Points. 5. 0 3. 5 Total 40 Was the exam fair? yes no The University of Toledo f6fs_elct7.fm - Problem 5 points Given is

More information

IFB270 Advanced Electronic Circuits

IFB270 Advanced Electronic Circuits IFB270 Advanced Electronic Circuits Chapter 0: Ampliier requency response Pro. Manar Mohaisen Department o EEC Engineering Review o the Precedent Lecture Reviewed o the JFET and MOSFET Explained and analyzed

More information

ID # NAME. EE-255 EXAM 3 April 7, Instructor (circle one) Ogborn Lundstrom

ID # NAME. EE-255 EXAM 3 April 7, Instructor (circle one) Ogborn Lundstrom ID # NAME EE-255 EXAM 3 April 7, 1998 Instructor (circle one) Ogborn Lundstrom This exam consists of 20 multiple choice questions. Record all answers on this page, but you must turn in the entire exam.

More information

Lecture 140 Simple Op Amps (2/11/02) Page 140-1

Lecture 140 Simple Op Amps (2/11/02) Page 140-1 Lecture 40 Simple Op Amps (2//02) Page 40 LECTURE 40 SIMPLE OP AMPS (READING: TextGHLM 425434, 453454, AH 249253) INTRODUCTION The objective of this presentation is:.) Illustrate the analysis of BJT and

More information

MICROELECTRONIC CIRCUIT DESIGN Second Edition

MICROELECTRONIC CIRCUIT DESIGN Second Edition MICROELECTRONIC CIRCUIT DESIGN Second Edition Richard C. Jaeger and Travis N. Blalock Answers to Selected Problems Updated 10/23/06 Chapter 1 1.3 1.52 years, 5.06 years 1.5 2.00 years, 6.65 years 1.8 113

More information

Electronics II. Midterm #2

Electronics II. Midterm #2 The University of Toledo EECS:3400 Electronics I su4ms_elct7.fm Section Electronics II Midterm # Problems Points. 8. 7 3. 5 Total 0 Was the exam fair? yes no The University of Toledo su4ms_elct7.fm Problem

More information

Homework Assignment 11

Homework Assignment 11 Homework Assignment Question State and then explain in 2 3 sentences, the advantage of switched capacitor filters compared to continuous-time active filters. (3 points) Continuous time filters use resistors

More information

ECEN 326 Electronic Circuits

ECEN 326 Electronic Circuits ECEN 326 Electronic Circuits Frequency Response Dr. Aydın İlker Karşılayan Texas A&M University Department of Electrical and Computer Engineering High-Frequency Model BJT & MOS B or G r x C f C or D r

More information

ESE319 Introduction to Microelectronics. Feedback Basics

ESE319 Introduction to Microelectronics. Feedback Basics Feedback Basics Stability Feedback concept Feedback in emitter follower One-pole feedback and root locus Frequency dependent feedback and root locus Gain and phase margins Conditions for closed loop stability

More information

6.2 INTRODUCTION TO OP AMPS

6.2 INTRODUCTION TO OP AMPS Introduction to Op Amps (7/17/00) Page 1 6.2 INTRODUCTION TO OP AMPS INTRODUCTION Objective The objective of this presentation is: 1.) Characterize the operational amplifier 2.) Illustrate the analysis

More information

Studio 9 Review Operational Amplifier Stability Compensation Miller Effect Phase Margin Unity Gain Frequency Slew Rate Limiting Reading: Text sec 5.

Studio 9 Review Operational Amplifier Stability Compensation Miller Effect Phase Margin Unity Gain Frequency Slew Rate Limiting Reading: Text sec 5. Studio 9 Review Operational Amplifier Stability Compensation Miller Effect Phase Margin Unity Gain Frequency Slew Rate Limiting Reading: Text sec 5.2 pp. 232-242 Two-stage op-amp Analysis Strategy Recognize

More information

Lecture 23 Frequency Response of Amplifiers (I) Common Source Amplifier. December 1, 2005

Lecture 23 Frequency Response of Amplifiers (I) Common Source Amplifier. December 1, 2005 6.02 Microelectronic Devices and Circuits Fall 2005 Lecture 23 Lecture 23 Frequency Response of Amplifiers (I) Common Source Amplifier December, 2005 Contents:. Introduction 2. Intrinsic frequency response

More information

Electronic Circuits Summary

Electronic Circuits Summary Electronic Circuits Summary Andreas Biri, D-ITET 6.06.4 Constants (@300K) ε 0 = 8.854 0 F m m 0 = 9. 0 3 kg k =.38 0 3 J K = 8.67 0 5 ev/k kt q = 0.059 V, q kt = 38.6, kt = 5.9 mev V Small Signal Equivalent

More information

1. (50 points, BJT curves & equivalent) For the 2N3904 =(npn) and the 2N3906 =(pnp)

1. (50 points, BJT curves & equivalent) For the 2N3904 =(npn) and the 2N3906 =(pnp) HW 3 1. (50 points, BJT curves & equivalent) For the 2N3904 =(npn) and the 2N3906 =(pnp) a) Obtain in Spice the transistor curves given on the course web page except do in separate plots, one for the npn

More information

Homework Assignment 09

Homework Assignment 09 Homework Assignment 09 Question 1 (Short Takes) Two points each unless otherwise indicated. 1. What is the 3-dB bandwidth of the amplifier shown below if r π = 2.5K, r o = 100K, g m = 40 ms, and C L =

More information

Microelectronic Circuit Design 4th Edition Errata - Updated 4/4/14

Microelectronic Circuit Design 4th Edition Errata - Updated 4/4/14 Chapter Text # Inside back cover: Triode region equation should not be squared! i D = K n v GS "V TN " v & DS % ( v DS $ 2 ' Page 49, first exercise, second answer: -1.35 x 10 6 cm/s Page 58, last exercise,

More information

Lecture 13 MOSFET as an amplifier with an introduction to MOSFET small-signal model and small-signal schematics. Lena Peterson

Lecture 13 MOSFET as an amplifier with an introduction to MOSFET small-signal model and small-signal schematics. Lena Peterson Lecture 13 MOSFET as an amplifier with an introduction to MOSFET small-signal model and small-signal schematics Lena Peterson 2015-10-13 Outline (1) Why is the CMOS inverter gain not infinite? Large-signal

More information

Electronics II. Midterm #1

Electronics II. Midterm #1 The University of Toledo EECS:3400 Electronics I su3ms_elct7.fm Section Electronics II Midterm # Problems Points. 5. 6 3. 9 Total 0 Was the exam fair? yes no The University of Toledo su3ms_elct7.fm Problem

More information

UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences

UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences E. Alon Final EECS 240 Monday, May 19, 2008 SPRING 2008 You should write your results on the exam

More information

EECS 105: FALL 06 FINAL

EECS 105: FALL 06 FINAL University of California College of Engineering Department of Electrical Engineering and Computer Sciences Jan M. Rabaey TuTh 2-3:30 Wednesday December 13, 12:30-3:30pm EECS 105: FALL 06 FINAL NAME Last

More information

ENGN3227 Analogue Electronics. Problem Sets V1.0. Dr. Salman Durrani

ENGN3227 Analogue Electronics. Problem Sets V1.0. Dr. Salman Durrani ENGN3227 Analogue Electronics Problem Sets V1.0 Dr. Salman Durrani November 2006 Copyright c 2006 by Salman Durrani. Problem Set List 1. Op-amp Circuits 2. Differential Amplifiers 3. Comparator Circuits

More information

EE105 Fall 2015 Microelectronic Devices and Circuits Frequency Response. Prof. Ming C. Wu 511 Sutardja Dai Hall (SDH)

EE105 Fall 2015 Microelectronic Devices and Circuits Frequency Response. Prof. Ming C. Wu 511 Sutardja Dai Hall (SDH) EE05 Fall 205 Microelectronic Devices and Circuits Frequency Response Prof. Ming C. Wu wu@eecs.berkeley.edu 5 Sutardja Dai Hall (SDH) Amplifier Frequency Response: Lower and Upper Cutoff Frequency Midband

More information

Electronics II. Midterm II

Electronics II. Midterm II The University of Toledo su7ms_elct7.fm - Electronics II Midterm II Problems Points. 7. 7 3. 6 Total 0 Was the exam fair? yes no The University of Toledo su7ms_elct7.fm - Problem 7 points Equation (-)

More information

CHAPTER 3: TRANSISTOR MOSFET DR. PHAM NGUYEN THANH LOAN. Hà Nội, 9/24/2012

CHAPTER 3: TRANSISTOR MOSFET DR. PHAM NGUYEN THANH LOAN. Hà Nội, 9/24/2012 1 CHAPTER 3: TRANSISTOR MOSFET DR. PHAM NGUYEN THANH LOAN Hà Nội, 9/24/2012 Chapter 3: MOSFET 2 Introduction Classifications JFET D-FET (Depletion MOS) MOSFET (Enhancement E-FET) DC biasing Small signal

More information

KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 7 DC BIASING FETS (CONT D)

KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 7 DC BIASING FETS (CONT D) KOM751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU Control and Automation Dept. 1 7 DC BIASING FETS (CONT D) Most of the content is from the textbook: Electronic devices and circuit theory, Robert

More information

Delhi Noida Bhopal Hyderabad Jaipur Lucknow Indore Pune Bhubaneswar Kolkata Patna Web: Ph:

Delhi Noida Bhopal Hyderabad Jaipur Lucknow Indore Pune Bhubaneswar Kolkata Patna Web:     Ph: Serial : ND_EE_NW_Analog Electronics_05088 Delhi Noida Bhopal Hyderabad Jaipur Lucknow ndore Pune Bhubaneswar Kolkata Patna Web: E-mail: info@madeeasy.in Ph: 0-4546 CLASS TEST 08-9 ELECTCAL ENGNEENG Subject

More information

ECEN 325 Electronics

ECEN 325 Electronics ECEN 325 Electronics Introduction Dr. Aydın İlker Karşılayan Texas A&M University Department of Electrical and Computer Engineering Ohm s Law i R i R v 1 v v 2 v v 1 v 2 v = v 1 v 2 v = v 1 v 2 v = ir

More information

Electronic Circuits. Prof. Dr. Qiuting Huang Integrated Systems Laboratory

Electronic Circuits. Prof. Dr. Qiuting Huang Integrated Systems Laboratory Electronic Circuits Prof. Dr. Qiuting Huang 6. Transimpedance Amplifiers, Voltage Regulators, Logarithmic Amplifiers, Anti-Logarithmic Amplifiers Transimpedance Amplifiers Sensing an input current ii in

More information

Electronics II. Midterm #2

Electronics II. Midterm #2 The University of Toledo EECS:3400 Electronics I Section sums_elct7.fm - StudentName Electronics II Midterm # Problems Points. 8. 3. 7 Total 0 Was the exam fair? yes no The University of Toledo sums_elct7.fm

More information

Feedback design for the Buck Converter

Feedback design for the Buck Converter Feedback design for the Buck Converter Portland State University Department of Electrical and Computer Engineering Portland, Oregon, USA December 30, 2009 Abstract In this paper we explore two compensation

More information

EE 230 Lecture 25. Waveform Generators. - Sinusoidal Oscillators The Wein-Bridge Structure

EE 230 Lecture 25. Waveform Generators. - Sinusoidal Oscillators The Wein-Bridge Structure EE 230 Lecture 25 Waveform Generators - Sinusoidal Oscillators The Wein-Bridge Structure Quiz 9 The circuit shown has been proposed as a sinusoidal oscillator. Determine the oscillation criteria and the

More information

6.012 Electronic Devices and Circuits Spring 2005

6.012 Electronic Devices and Circuits Spring 2005 6.012 Electronic Devices and Circuits Spring 2005 May 16, 2005 Final Exam (200 points) -OPEN BOOK- Problem NAME RECITATION TIME 1 2 3 4 5 Total General guidelines (please read carefully before starting):

More information

ECE 255, Frequency Response

ECE 255, Frequency Response ECE 255, Frequency Response 19 April 2018 1 Introduction In this lecture, we address the frequency response of amplifiers. This was touched upon briefly in our previous lecture in Section 7.5 of the textbook.

More information

ELECTRONIC SYSTEMS. Basic operational amplifier circuits. Electronic Systems - C3 13/05/ DDC Storey 1

ELECTRONIC SYSTEMS. Basic operational amplifier circuits. Electronic Systems - C3 13/05/ DDC Storey 1 Electronic Systems C3 3/05/2009 Politecnico di Torino ICT school Lesson C3 ELECTONIC SYSTEMS C OPEATIONAL AMPLIFIES C.3 Op Amp circuits» Application examples» Analysis of amplifier circuits» Single and

More information

Chapter 13 Small-Signal Modeling and Linear Amplification

Chapter 13 Small-Signal Modeling and Linear Amplification Chapter 13 Small-Signal Modeling and Linear Amplification Microelectronic Circuit Design Richard C. Jaeger Travis N. Blalock 1/4/12 Chap 13-1 Chapter Goals Understanding of concepts related to: Transistors

More information

At point G V = = = = = = RB B B. IN RB f

At point G V = = = = = = RB B B. IN RB f Common Emitter At point G CE RC 0. 4 12 0. 4 116. I C RC 116. R 1k C 116. ma I IC 116. ma β 100 F 116µ A I R ( 116µ A)( 20kΩ) 2. 3 R + 2. 3 + 0. 7 30. IN R f Gain in Constant Current Region I I I C F

More information

ESE319 Introduction to Microelectronics. Feedback Basics

ESE319 Introduction to Microelectronics. Feedback Basics Feedback Basics Feedback concept Feedback in emitter follower Stability One-pole feedback and root locus Frequency dependent feedback and root locus Gain and phase margins Conditions for closed loop stability

More information

Lecture 23 - Frequency Resp onse of Amplifiers (I) Common-Source Amplifier. May 6, 2003

Lecture 23 - Frequency Resp onse of Amplifiers (I) Common-Source Amplifier. May 6, 2003 6.0 Microelectronic Devices and Circuits Spring 003 Lecture 3 Lecture 3 Frequency Resp onse of Amplifiers (I) CommonSource Amplifier May 6, 003 Contents:. Intro duction. Intrinsic frequency resp onse of

More information

Exercise s = 1. cos 60 ± j sin 60 = 0.5 ± j 3/2. = s 2 + s + 1. (s + 1)(s 2 + s + 1) T(jω) = (1 + ω2 )(1 ω 2 ) 2 + ω 2 (1 + ω 2 )

Exercise s = 1. cos 60 ± j sin 60 = 0.5 ± j 3/2. = s 2 + s + 1. (s + 1)(s 2 + s + 1) T(jω) = (1 + ω2 )(1 ω 2 ) 2 + ω 2 (1 + ω 2 ) Exercise 7 Ex: 7. A 0 log T [db] T 0.99 0.9 0.8 0.7 0.5 0. 0 A 0 0. 3 6 0 Ex: 7. A max 0 log.05 0 log 0.95 0.9 db [ ] A min 0 log 40 db 0.0 Ex: 7.3 s + js j Ts k s + 3 + j s + 3 j s + 4 k s + s + 4 + 3

More information

ECE137B Final Exam. Wednesday 6/8/2016, 7:30-10:30PM.

ECE137B Final Exam. Wednesday 6/8/2016, 7:30-10:30PM. ECE137B Final Exam Wednesday 6/8/2016, 7:30-10:30PM. There are7 problems on this exam and you have 3 hours There are pages 1-32 in the exam: please make sure all are there. Do not open this exam until

More information

Switched-Capacitor Circuits David Johns and Ken Martin University of Toronto

Switched-Capacitor Circuits David Johns and Ken Martin University of Toronto Switched-Capacitor Circuits David Johns and Ken Martin University of Toronto (johns@eecg.toronto.edu) (martin@eecg.toronto.edu) University of Toronto 1 of 60 Basic Building Blocks Opamps Ideal opamps usually

More information

Philadelphia University Faculty of Engineering Communication and Electronics Engineering

Philadelphia University Faculty of Engineering Communication and Electronics Engineering Module: Electronics II Module Number: 6503 Philadelphia University Faculty o Engineering Communication and Electronics Engineering Ampliier Circuits-II BJT and FET Frequency Response Characteristics: -

More information

LECTURE 130 COMPENSATION OF OP AMPS-II (READING: GHLM , AH )

LECTURE 130 COMPENSATION OF OP AMPS-II (READING: GHLM , AH ) Lecture 30 Compensation of Op AmpsII (/26/04) Page 30 LECTURE 30 COMPENSATION OF OP AMPSII (READING: GHLM 638652, AH 260269) INTRODUCTION The objective of this presentation is to continue the ideas of

More information

Lecture 4: R-L-C Circuits and Resonant Circuits

Lecture 4: R-L-C Circuits and Resonant Circuits Lecture 4: R-L-C Circuits and Resonant Circuits RLC series circuit: What's V R? Simplest way to solve for V is to use voltage divider equation in complex notation: V X L X C V R = in R R + X C + X L L

More information

Stability of Operational amplifiers

Stability of Operational amplifiers Stability o Operational ampliiers Willy Sansen KULeuven, ESAT-MICAS Leuven, Belgium willy.sansen@esat.kuleuven.be Willy Sansen 0-05 05 Table o contents Use o operational ampliiers Stability o 2-stage opamp

More information

Advanced Current Mirrors and Opamps

Advanced Current Mirrors and Opamps Advanced Current Mirrors and Opamps David Johns and Ken Martin (johns@eecg.toronto.edu) (martin@eecg.toronto.edu) slide 1 of 26 Wide-Swing Current Mirrors I bias I V I in out out = I in V W L bias ------------

More information

CMOS Analog Circuits

CMOS Analog Circuits CMOS Analog Circuits L6: Common Source Amplifier-1 (.8.13) B. Mazhari Dept. of EE, IIT Kanpur 19 Problem statement : Design an amplifier which has the following characteristics: + CC O in R L - CC A 100

More information

EE 330. Lecture 35. Parasitic Capacitances in MOS Devices

EE 330. Lecture 35. Parasitic Capacitances in MOS Devices EE 330 Lecture 35 Parasitic Capacitances in MOS Devices Exam 2 Wed Oct 24 Exam 3 Friday Nov 16 Review from Last Lecture Cascode Configuration Discuss V CC gm1 gm1 I B VCC V OUT g02 g01 A - β β VXX Q 2

More information

ESE319 Introduction to Microelectronics Bode Plot Review High Frequency BJT Model

ESE319 Introduction to Microelectronics Bode Plot Review High Frequency BJT Model Bode Plot Review High Frequency BJT Model 1 Logarithmic Frequency Response Plots (Bode Plots) Generic form of frequency response rational polynomial, where we substitute jω for s: H s=k sm a m 1 s m 1

More information

Frequency Response Prof. Ali M. Niknejad Prof. Rikky Muller

Frequency Response Prof. Ali M. Niknejad Prof. Rikky Muller EECS 105 Spring 2017, Module 4 Frequency Response Prof. Ali M. Niknejad Department of EECS Announcements l HW9 due on Friday 2 Review: CD with Current Mirror 3 Review: CD with Current Mirror 4 Review:

More information

Systematic Design of Operational Amplifiers

Systematic Design of Operational Amplifiers Systematic Design of Operational Amplifiers Willy Sansen KULeuven, ESAT-MICAS Leuven, Belgium willy.sansen@esat.kuleuven.be Willy Sansen 10-05 061 Table of contents Design of Single-stage OTA Design of

More information

ECE 304: Bipolar Capacitances E B C. r b β I b r O

ECE 304: Bipolar Capacitances E B C. r b β I b r O ECE 34: Bipolar Capacitances The Bipolar Transistor: S&S pp. 485497 Let s apply the diode capacitance results to the bipolar transistor. There are two junctions in the bipolar transistor. The BC (basecollector)

More information

R-L-C Circuits and Resonant Circuits

R-L-C Circuits and Resonant Circuits P517/617 Lec4, P1 R-L-C Circuits and Resonant Circuits Consider the following RLC series circuit What's R? Simplest way to solve for is to use voltage divider equation in complex notation. X L X C in 0

More information

Lecture 120 Filters and Charge Pumps (6/9/03) Page 120-1

Lecture 120 Filters and Charge Pumps (6/9/03) Page 120-1 Lecture 120 Filters and Charge Pumps (6/9/03) Page 1201 LECTURE 120 FILTERS AND CHARGE PUMPS (READING: [4,6,9,10]) Objective The objective of this presentation is examine the circuits aspects of loop filters

More information

Electronic Circuits EE359A

Electronic Circuits EE359A Electronic Circuits EE359A Bruce McNair B206 bmcnair@stevens.edu 201-216-5549 Lecture 18 379 Signal Generators and Waveform-shaping Circuits Ch 17 380 Stability in feedback systems Feedback system Bounded

More information

EE 321 Analog Electronics, Fall 2013 Homework #8 solution

EE 321 Analog Electronics, Fall 2013 Homework #8 solution EE 321 Analog Electronics, Fall 2013 Homework #8 solution 5.110. The following table summarizes some of the basic attributes of a number of BJTs of different types, operating as amplifiers under various

More information

5. EXPERIMENT 5. JFET NOISE MEASURE- MENTS

5. EXPERIMENT 5. JFET NOISE MEASURE- MENTS 5. EXPERIMENT 5. JFET NOISE MEASURE- MENTS 5.1 Object The objects of this experiment are to measure the spectral density of the noise current output of a JFET, to compare the measured spectral density

More information

KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 4 DC BIASING BJTS (CONT D II )

KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 4 DC BIASING BJTS (CONT D II ) KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 4 DC BIASING BJTS (CONT D II ) Most of the content is from the textbook: Electronic devices and circuit theory,

More information

ECE3050 Assignment 7

ECE3050 Assignment 7 ECE3050 Assignment 7. Sketch and label the Bode magnitude and phase plots for the transfer functions given. Use loglog scales for the magnitude plots and linear-log scales for the phase plots. On the magnitude

More information

Common Drain Stage (Source Follower) Claudio Talarico, Gonzaga University

Common Drain Stage (Source Follower) Claudio Talarico, Gonzaga University Common Drain Stage (Source Follower) Claudio Talarico, Gonzaga University Common Drain Stage v gs v i - v o V DD v bs - v o R S Vv IN i v i G C gd C+C gd gb B&D v s vv OUT o + V S I B R L C L v gs - C

More information

LECTURE 090 FILTERS AND CHARGE PUMPS

LECTURE 090 FILTERS AND CHARGE PUMPS Lecture 090 Filters and Charge Pumps (09/01/03) Page 0901 LECTURE 090 FILTERS AND CHARGE PUMPS Objective The objective of this presentation is to examine the circuits aspects of loop filters and charge

More information

AN6783S. IC for long interval timer. ICs for Timer. Overview. Features. Applications. Block Diagram

AN6783S. IC for long interval timer. ICs for Timer. Overview. Features. Applications. Block Diagram IC for long interval timer Overview The is an IC designed for a long interval timer. It is oscillated by using the external resistor and capacitor, and the oscillation frequency divided by a - stage F.F.

More information

Chapter 10 Feedback. PART C: Stability and Compensation

Chapter 10 Feedback. PART C: Stability and Compensation 1 Chapter 10 Feedback PART C: Stability and Compensation Example: Non-inverting Amplifier We are analyzing the two circuits (nmos diff pair or pmos diff pair) to realize this symbol: either of the circuits

More information

CARLETON UNIVERSITY. FINAL EXAMINATION December DURATION 3 HOURS No. of Students 130

CARLETON UNIVERSITY. FINAL EXAMINATION December DURATION 3 HOURS No. of Students 130 ALETON UNIVESITY FINAL EXAMINATION December 005 DUATION 3 HOUS No. of Students 130 Department Name & ourse Number: Electronics ELE 3509 ourse Instructor(s): Prof. John W. M. ogers and alvin Plett AUTHOIZED

More information

Bipolar Junction Transistor (BJT) - Introduction

Bipolar Junction Transistor (BJT) - Introduction Bipolar Junction Transistor (BJT) - Introduction It was found in 1948 at the Bell Telephone Laboratories. It is a three terminal device and has three semiconductor regions. It can be used in signal amplification

More information

ECE 304: Design Issues for Voltage Follower as Output Stage S&S Chapter 14, pp

ECE 304: Design Issues for Voltage Follower as Output Stage S&S Chapter 14, pp ECE 34: Design Issues for oltage Follower as Output Stage S&S Chapter 14, pp. 131133 Introduction The voltage follower provides a good buffer between a differential amplifier and a load in two ways: 1.

More information