Electronics 2

Code:

EEC0027

Acronym:

ELEC2

Keywords
Classification	Keyword
OFICIAL	Electronics and Digital Systems

Instance: 2013/2014 - 1S

Active?	Yes
Web Page:	https://moodle.fe.up.pt/1011/course/view.php?id=28
Responsible unit:	Department of Electrical and Computer Engineering
Course/CS Responsible:	Master in Electrical and Computers Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MIEEC	88	Syllabus (Transition) since 2010/2011	3	-	8	87	216
		Syllabus	3	-	8	87	216

Teaching language

Portuguese

Objectives

A primary objective of the course, the continuation of Electronics 1 -- in which a wide range of subjects was covered in a relatively shallow depth -- is the analysis and design of IC multistage broadband amplifiers, both with CMOS or BJT technology. The frequency response of the amplifiers is addressed in detail. Feedback, its basic topologies, characteristics and stability and compensation issues are also analysed. The field of linear circuits is further enhanced by the study of sinusoidal oscillators, operating principle, configuration, stability, etc.
Finally, multivibrators and wave-shaping circuits are also studied and special circuits like comparators and the Schmitt-trigger are also explained.
This broad view is adequate to prepare the student for further studies in linear circuits and analog end digital VLSI design.

Learning outcomes and competences

This course follows on electronics 1, completing the sequence of fundamental knowledge in electronic circuits for signal. Consequently, aims to provide students with concepts and techniques of analysis for differential and multi-stage amplifiers, frequency behavior and analysis with feedback. It also aims to give students design skills on these same circuits, by including this component in the laboratory work.

Working method

Presencial

Program

1. Building Blocks of Integrated-Circuit Amplifiers

• The Basic Gain Cell 

 

• The Cascode Amplifier 

 

• IC Biasing—Current Sources, Current Mirrors, and Current-Steering Circuits 

 

• Current-Mirror Circuits with Improved Performance 

 

• Some Useful Transistor Pairings 

 

• Comparison of the MOSFET and BJT 

2. Differential and Multistage Amplifiers


• The MOS Differential Pair and its Small-Signal Operation 

 

• The BJT Differential Pair 

 

• Nonideal Characteristics of the Differential Amplifier 

 

• The Differential Amplifier with Active Load 

 

• Multistage Amplifiers 

3. Output Stages and Power Amplifiers


• Classification of Output Stages
 

 

• Class A, B and AB Output Stage 

 

• Biasing the Class AB Circuit 

 

• CMOS and BJT examples of Class AB Configuration 

4. Frequency Response


• Low-Frequency Response of the CS and CE Amplifiers 

 

• Internal Capacitive Effects and the High-Frequency Model of the MOSFET and the BJT 

 

• High-Frequency Response of the CS and CE Amplifiers 

 

• High-Frequency Response of 

 

• CG and Cascode Amplifiers 

 

• Source and Emitter Followers 

 

• Differential Amplifiers 

 

• Other Wideband Amplifier Configurations and High-Frequency Response of Multistage Amplifiers 

5. Feedback


• The General Feedback Structure
 

 

• Some Properties of Negative Feedback 

 

• The Four Basic Feedback Topologies 

• Voltage-Amplifier (Series-Shunt) 

 

• Transconductance-Amplifier (Series-Series) 

 

• Transresistance-Amplifier (Shunt-Shunt) 

 

• Current-Amplifier (Shunt-Series) 

• Feedback Analysis Methods and Loop Gain 

 

• The Stability Problem 

 

• Effect of Feedback on the Amplifier Poles 

 

• Stability Study Using Bode Plots 

 

• Frequency Compensation 

6. Operational Amplifier Circuits


• The Two Stage CMOS Op Amp 

 

• The Folded Cascode CMOS Op Amp 

 

• The 741 Op-Amp Circuit 

 

• DC Analysis of the 741 

 

• Small-Signal Analysis 

 

• Gain Frequency Response, Slew Rate 

 

• Modern Techniques for the Design of BJT Op Amps 

7. Signal Generators and Waveform-Shaping Circuits


• Basic Principles of Sinusoidal Oscillators 

 

• Op-Amp RC Oscillator Circuits, LC and Crystal Oscillators 

 

• Bistable, monostable and astable Multivibrators 

 

• Integrated-Circuit Timers

 

Mandatory literature

Sedra, adel S., Smith, Keneth C.; Microelectronic Circuits, 6th Ed., Oxford University Press, 2011. ISBN: 978-019-973851-9

Comments from the literature

Older editions requires some content adaptation, but major attention should be paid to the order of the subjects that in many situations are organized in a different manner.

Teaching methods and learning activities

 

 

 

Software

MultiSIm

keywords

Technological sciences > Engineering > Electronic engineering
Technological sciences > Engineering > Electrical engineering

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	50,00
Teste	20,00
Trabalho laboratorial	30,00
Total:	100,00

Eligibility for exams

The final grade is the weighted average of:
1. Lab component (30%) - L

• Participation during the classes (50%) and the results obtained in the quizzes proposed in the class. The quiz is about the work done in the autonomous work which is discussed during the first hour, and takes about 30min. The last half hour is used to explain what is to be done by the students in the following autonomous work. 

 

• This part of the evaluation procedure is obligatory for all the students. For the students with special situations the procedure may be discussed. 

 

• The grade obtained in this part will remain if the student is to attend this course in other years (no limit). However, the students may require to attend lab classes again in this case, the previous grade is automatically lost. 

 

• This evaluation will be limited to the grade of the examination plus 4 (in 20), each time the student applies to the examination, be it because he failed previously or because he wants to improve the grade. 

2. Two tests to be taken during the class period, the first around the 5th or 6th class week and the 2nd around the 9th our 10th week. Each test will be considered with a weight of 10% for the final grade. - M

 

3. Final exam with a weight that can vary between 50% and 70%. - E

• For regular students will, in general be 50%; 

 

• If a regular student misses one of the tests for a reason the professor considers justifiable, its percentage is moved to the final exam; 

 

• For students that have previously enrolled successfully in this course or students with some special situation, unless they take the tests again voluntarily, the exam will be weighted 70% 

Take notice that:

• The lab classes are compulsory and subjected to the legally established for missed classes. 

 

• A justified miss will not eliminate the weight of that class to the grading procedure. The students are invited to do the work in another class or in their own time, subjected to the authorization of the prof. 

 

• To apply to the final examination, the student has to active a minimum score of 8/20 in the lab grading. 

 

• The score obtained in the tests keeps its value, in the year it was taken, be in in the "normal" instantiation of final exam or in the rescuing instantiation. 

 

• Even if the student does the 2nd examination to improve the score, the same applies; if it is done in a different year, only the lab score is considered and the final exam is weighted at 70%.

 

Calculation formula of final grade

consider L1=min (L, E-4)

1. Regular students or students with a special situation having done the tests: 0,5*E+0,3*L1+0,2*M 

 

1. Students that missed one of the tests with a valid justification: 0,6*E+0,3*L1+0,1*M

 

1. Students that missed both tests, with a valid justification: 0,7*E+0,3*L1

 

Examinations or Special Assignments

None

Special assessment (TE, DA, ...)

0,7*E+0,3*L1

Classification improvement

 

1. Final grading: repetition of the final exam 

 

1. Distributed classification: Attend the lab classes again

 

Observations

Course contents will be posted on Moodle platform. In it will contain updated information that students should regularly consult. The information posted there is information that students must mandatorily know.