Module Details

CE263-5-SP-CO: Analogue Circuit Design

Year: 2017/18
Department: Computer Science and Electronic Engineering
Essex credit: 15
ECTS credit: 7.5
Available to Study Abroad / Exchange Students: Yes
Full Year Module Available to Study Abroad / Exchange Students for a Single Term: No
Outside Option: No

Supervisor: Professor Stuart Walker
Teaching Staff: Professor Stuart Walker
Contact details: School Office, email: csee-schooloffice (non-Essex users should add to create full e-mail address), Telephone 01206 872770

Module is taught during the following terms
Autumn Spring Summer

Module Description

This module aims to develop an in-depth understanding of analogue systems and circuit techniques from the perspective of the design process. The module incorporates two major themes: The first is the circuit orientated theme aiming to engender both an intuitive understanding of simple circuit design and functionality.

The second theme focuses on the more formal analysis and computer simulation techniques using equivalent circuit transistor models where key skills in numeracy and circuit simulation are developed and then used in the design, simulation and construction of oscillator circuits. The module is supported by laboratory-based assignments that investigate small signal amplifiers, and voltage-controlled oscillator design and applications.

Learning Outcomes

Derive ac-equivalent models from transistor terminal behaviour as an aid to small-signal analysis and as a design aid for small-signal audio amplifiers and linear oscillators.

Understand the design process and system requirements and apply these in the design of single-stage transistor amplifiers, basic operational amplifier circuits, and power supplies.

Use CAD tools such as MultiSIM to perform circuit-level simulations.

Implement, test and evaluate practical design solutions and communicate the methodology, results and conclusions in both written and oral form.

Outline Syllabus

Basic Electronic Circuits:

Power Supplies:
Half-wave and full wave rectification
Bridge rectifier
Capacitive smoothing filters
Ripple voltage
Zener regulated power supply
Series and shunt regulators
DC to AC power inverters-very important these days

Transistor Bias Circuits:

Choice of DC operating point
Constant current base bias circuit
Effect of temperature and variation with base bias
Voltage-divider bias-Effect of temperature and variation with voltage-divider bias
Collector feedback bias
Effect of temperature and variation with collector feedback bias
Use of nearest preferred values in the design process
Coping with power supply noise

Low-frequency (Audio) Amplifiers:

Single-Stage Transistor Amplifiers:
Bode plots
Simple small-signal model
Common-emitter amplifier
Effect of source and load resistance
Shunt and series feedback
Common-collector (emitter follower) amplifier
Low-frequency amplifier response
Single-stage bootstrap-bias amplifier

Operational Amplifiers Fundamentals:
Differential single-stage amplifier
Operational Amplifier parameters
Differential gain
Common-mode gain
Common-mode rejection ratio (CMRR)
Negative feedback, closed-loop gain and bandwidth
Non-inverting amplifier
Voltage follower
FET input op amps.
Effects of negative feedback on input and output resistances
DC offsets, bias current and offset voltage compensation
Inverting amplifier (virtual-earth amplifier)
Amplitude and slew rate limiting
Open-loop and closed-loop frequency response
Rise time and bandwidth relationship
Compensation capacitor

Operational Amplifier Circuits:
Simple comparator
Comparator with hysteresis, effect of noise
Flash analogue-to-digital converter (ADC)

Summing amplifier, difference amplifier
Instrumentation amplifier
Integrator and differentiator
Example linear low-pass filter using Sallen and Key Topology

Barkhausen criterion
RC, LC and Wien bridge oscillator configurations
Frequency stability and amplitude stabilization
Crystal Oscillators
Relaxation oscillators (555 timer device)
Voltage-controlled oscillator (VCO) designs and their application in phase locked loops.

Learning and Teaching Methods

Lectures, Classes and Labs


40 per cent Coursework Mark, 60 per cent Exam Mark


Progress Test, worth 10%, held in week 22; Assignment 1: Amplifier design (hardware lab experiment), worth 10%, submitted in week 24; Assignment 2: Voltage controlled oscillators and phase locked loop (hardware lab experiment), worth 20%, submitted in week 30

Exam Duration and Period

2:00 during Summer Examination period.

Other information



  • Reading
  • FLOYD, T.L., Electronic Devices, Prentice Hall (6th edn 2002)