ECX 6250 : Analog Electronic Systems
Course Information – 2015 / 2016
Introduction to Course:
This course is a higher-level (analog) electronics course which is built upon fundamental
electronics courses you would have already taken.
Learning Outcomes:
After completing the course the students should be able to,
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Understand the behavior of transistors at different frequencies
Understand the transistor behavior’s effect to the circuit responses
Understand the principle of feedback and its applications
Design circuits with practical op-amp characteristics
Pre-requisites
In order to take this course a student should have previously taken ECX3150(P),
ECX4150(P), MPZ3132(P), MEX3211(P), and ECX4230(EL) or equivalent courses
approved by the head of the department.
Course Components
1. Day schools
2. Course material and the recommended texts
3. Online class (Moodle)
4. Three assignments
5. Two continuous assessment tests
6. Laboratory sessions
7. Final Exam
You are required to go through the course material. Apart from the course material,
recommended texts and the internet are valuable sources of information with respect to
this course.
Recommended Text Books
1. Electronic Devices Conventional Current Version, by Floyd
2. Electronics Fundamentals Circuits, Devices, and Applications, by Floyd
3. Electronic Devices and Circuit Theory, by Robert L. Boylestad, Louis Nashelsky
4. Electronic Devices & Circuits by T.S. Bogart,
5. Electronic Devices and Circuits, by Theodore F. Bogart Jr., Jeffrey S. Beasley, and
Guillermo Rico
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6. Digital design by Morris Mano.
Any standard text book on analog electronics will most likely cover the required topics.
For a complete list of text books, please refer the Moodle class.
Course Content:
Unit 1: Diodes/ Diode models
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Piecewise linear diode model
Nonlinear model
Advanced circuit applications
Unit 2: BJT at low frequencies
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Use of Ebers-Moll equation
Application to emitter follower circuits
Application to differential amplifiers
Unit 3: FET at low frequencies
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FET low frequency model
FET as a voltage variable resistor
Unit 4: BJT at high frequencies
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The Hybrid- common emitter model
Application to common emitter amplifier
Application to emitter follower amplifier
Unit 5: FET at high frequencies
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Common source amplifier at high frequencies
Common drain amplifier at high frequencies
Unit 6: Frequency response of amplifiers
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Low frequency response
High frequency response
Bode plots of single and two pole transfer functions
Step response and square wave testing
Cascaded stages of amplifiers
Low frequency behavior
High frequency behavior
Unit 7: Amplifiers with feedbacks
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Amplifier types
Feedback types and use of the feedback
Unit 8: Stability of amplifiers and stability compensation techniques
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Bandwidth improvement by feedback
An amplifier with multiple poles
Conditions for stability
Gain and phase margins
Dominant pole compensation,
Pole Zero (Lead Lag) Compensation
Modified  network compensation
Unit 9: Advanced operational amplifier topics
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Op-amp front end and the differential amplifier
Practical op-amp parameters
Temperature and time drifts
Large Signal behavior
Frequency compensation
Evaluation:
You are required to prepare three home assignments. These should be prepared
individually although you are encouraged to form discussion groups and discuss the
issues among yourselves whenever possible. Plagiarism (that is, presenting other's work
as your own) will not be tolerated, and will be reflected in the grade of all parties
involved. Each student is expected to produce an assignment report to answer the
questions in each assignment.
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There will be two Continuous Assessment Tests: The Continuous Assessment Test (CAT)
will be of the OPEN BOOK type, where you would be allowed to refer any material
during the test.
Final Examination will be of the conventional type where NO REFERENCE is allowed
(Closed Book).
Continuous Assessment:
The continuous assessment of the course would consist of four components, the best two
out of three assignments, the best of the CA tests and the lab. The CA mark will be
calculated according to the following formula.
CA mark = (sum of best two assignment marks)*0.15+best CAT mark*0.3+ Lab*0.4
For those who obtain a minimum of 40% in continuous assessment and also more than
or equal to 40% in the lab, there will be a final examination.
Final Mark:
Your overall performance will be based on the average of the continuous assessment and
the final examination, provided you obtain a minimum of 40% at the final examination.
Activity Schedule:
Day Schools, TMA due dates, etc. Information regarding dates and times for all of the
above activities are given in the ACTIVITY DIARY. There are three day schools for this
course.
Academic Coordinators:
Dr. S. Easwaran
Department of Electrical & Computer Engineering,
The Open University of Sri Lanka,
Nawala, Nugegoda.
Phone: 011-2881272
Email: seasw@ou.ac.lk
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