Analog Circuits
A third-semester core course (PCECT303) covering wave shaping circuits, BJT/MOSFET biasing and amplifiers, feedback amplifiers, oscillators, power amplifiers, and linear voltage regulators.
Instructor: Ameenudeen P E
Term: July - November
Location: Department of ECE, College of Engineering Trivandrum
Time: As per class timetable
Course Overview
Analog Circuits (PCECT303) is a core third-semester course for the Electronics and Communication Engineering programme. It introduces the principles, operation, and applications of analog electronic circuits and devices, and builds up the analysis and design of amplifiers and their configurations.
Course Outcomes
- CO1 — Design wave shaping circuits using a first-order RC network and diodes.
- CO2 — Analyze single-stage and multistage BJT amplifier circuits using equivalent models.
- CO3 — Apply the principles of feedback in the design of oscillators.
- CO4 — Design power amplifiers and voltage regulator circuits.
Course Project
Every team must complete a course project as the Assignment/Micro-project component of the CIE (15 marks) — a hardware build, a SPICE simulation, or both, built around a circuit from the syllabus taken beyond what the lectures or lab cover. Full guidelines, grading rubric, and the week-by-week plan are in the Course Project Handbook.
- Teams: groups of 3 (4 only with prior approval)
- Abstract submission: due August 17,2026
- Mode: hardware, simulation, or both — the team’s choice
- Submission: a shared project folder (schematics, SPICE files, measurements, logbook scan) and a final report.
Prerequisites
- Basic Electrical Engineering (BEE / GYEST104)
Course Structure
- Teaching hours: 3 lecture + 1 tutorial hours/week
- Credits: 4
- Evaluation: 40 marks Continuous Internal Evaluation (CIE) + 60 marks End Semester Examination (ESE)
Textbooks
- Robert Boylestad and L. Nashelsky, Electronic Devices and Circuit Theory, Pearson, 11th edition, 2015
- Sedra A. S. and K. C. Smith, Microelectronic Circuits, Oxford University Press, 6th edition, 2013
- Theodore F. Bogart, Jeffrey S. Beasley, and Guillermo Rico, Electronic Circuits and Devices, Pearson Education India, 6th edition
Reference Books
- B. Razavi, Fundamentals of Microelectronics, Wiley, 2nd edition, 2015
- David A. Bell, Electronic Devices and Circuits, Oxford University Press, 5th edition, 2008
- D. Meganathan, Electronic Circuits Analysis and Design 1, Yes Dee Publishing, 1st edition, 2023
- K. Gopakumar, Analysis and Design of Electronic Circuits, OWL Books, 1st edition, 2023
Grading (CIE — 40 marks)
| Component | Marks |
|---|---|
| Attendance | 5 |
| Assignment / Microproject | 15 |
| Internal Examination 1 (written) | 10 |
| Internal Examination 2 (written) | 10 |
Schedule
| Week | Date | Topic | Materials |
|---|---|---|---|
| 1 | Jul 16 | Wave Shaping Circuits RC differentiating and integrating circuits; first order RC low-pass and high-pass filter response to a step input — rise time and bandwidth. Diode clipping and clamping circuits. | |
| 2 | Jul 23 | Diode Circuits and Biasing Need for biasing, DC load line and operating point, BJT biasing (CE configuration) — fixed bias and voltage divider bias design, MOSFET biasing. | |
| 3 | Jul 30 | BJT Amplifiers Design of the RC coupled CE amplifier, small-signal analysis using the hybrid-π model at low and mid frequency. High-frequency hybrid-π model of the BJT, Miller effect, high-frequency response of a single-stage CE amplifier, short-circuit current gain, cut-off frequency f_β and unity-gain bandwidth f_T. | |
| 4 | Aug 6 | MOSFET and Multistage Amplifiers Design of the CS amplifier and its small-signal analysis. Multistage BJT amplifiers, effect of cascading on gain and bandwidth, and the BJT cascode amplifier. | |
| 5 | Aug 14 | First Series Examination Written internal examination covering Modules 1 and 2. | |
| 6 | Aug 20 | Feedback Amplifiers The general feedback structure; effect of negative feedback on gain, bandwidth, noise, and distortion. The four basic feedback topologies; analysis of discrete BJT circuits in voltage-series and voltage-shunt feedback — voltage gain, input and output impedance. | |
| 7 | Aug 27 | Oscillators Classification and the criterion for oscillation. Wien bridge, Hartley, and Crystal oscillators — working principle and design equations; detailed analysis of the Wien bridge oscillator. | |
| 8 | Sep 3 | Power Amplifiers Classification of power amplifiers. Transformer-coupled class A, push-pull class B and class AB, complementary-symmetry class B and class AB, and class C and class D power amplifiers — efficiency and distortion. | |
| 9 | Sep 10 | Linear Voltage Regulators Series and shunt voltage regulators — working and design, load and line regulation, short-circuit protection, and foldback protection. | |
| 10 | Sep 17 | Problem Solving Worked problems and design exercises drawn from Modules 3 and 4. | |
| 11 | Sep 24 | Comprehensive Revision Consolidation across all four modules ahead of the second series examination. | |
| 12 | Oct 9 | Second Series Examination Written internal examination covering Modules 3 and 4. | |
| 13 | Oct 12 | Final Revision Final consolidation and doubt-clearing session across all four modules. |