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DRPS : Course Catalogue : School of Engineering : Electronics

Postgraduate Course: Analogue circuit design (ELEE11045)

Course Outline
SchoolSchool of Engineering CollegeCollege of Science and Engineering
Credit level (Normal year taken)SCQF Level 11 (Postgraduate) AvailabilityAvailable to all students
SCQF Credits10 ECTS Credits5
SummaryThis course introduces students to the important analogue circuits of active filters, sine wave oscillators, relaxation oscillators, switched capacitor circuits and phase-locked loops. The aim is to present and instil the principles of circuit operation and the essential circuit analysis and design techniques to enable students to understand and design the simpler variants of the above circuits and to be capable of extending their understanding to more complex variants.
Course description Lectures

Active Filters
L1 Introduction and Overview
1st and 2nd order transfer functions
L2 Filter sections
Active 1st order section. Sallen-Key low pass sections and transfer function
L3 Butterworth Approximation
Butterworth transfer function, magnitude characteristic, pole-zero diagram, derivation of Butterworth polynomial from pole locations. Order of Butterworth.
L4 Butterworth low pass
Synthesis of Butterworth low pass filters from specification.
L5 Chebyshev Approximation 1
Transfer function, magnitude characteristic, order of Chebyshev, Chebyshev features.
L6 Chebyshev Approximation 2
Denormalising Chebyshev low pass. Chebyshev synthesis.
L7 Filter Comparison and High Pass
Comparison of Butterworth, Chebyshev and Bessel. High pass transform.
L8 Sensitivity Analysis
Introduction to band pass and band stop. Sensitivity analysis of filter sections to passive components. Effects of op-amp imperfections.

Oscillators and Waveform Generators
L9 Sine wave oscillators 1
Barkhausen Criterion. Phase shift oscillator, Wien Bridge oscillator.
L10 Sine wave oscillators 2
Amplitude control, Colpitts, Hartley, Clapp, Pierce oscillators.
L11 Sine wave oscillators 3
Sensitivity to active device parasitics and variations. Regenerative comparator.
L12 Waveform Generators 1
Simple relaxation oscillator, Triangle wave generator.
L13 Waveform Generators 2
Sawtooth wave generator, Voltage-controlled oscillator.

Switched-capacitor circuits
L14 Switched-cap 1
Switched capacitor circuit as a replacement for a resistor, first order analysis
L15 Switched-cap 2
Full SC analysis in z-plane, design of SC active filters
L16 Switched-cap 3
Stray-insensitive SC circuits, biquad in SC form

Phase-locked loops
L17 PLL1
Analogue multipliers, Gilbert multiplier Linear phase detectors, XOR gate as a phase detector
L18 PLL2
PLL System diagram, noting that the VCO acts as an integrating element. First order PLLs.
L19 PLL3
Second order PLL, discussion. Lead-lag loop filter.

L20 Revision


One per teaching week.

Entry Requirements (not applicable to Visiting Students)
Pre-requisites Co-requisites
Prohibited Combinations Other requirements None
Information for Visiting Students
Course Delivery Information
Academic year 2014/15, Available to all students (SV1) Quota:  None
Course Start Semester 2
Timetable Timetable
Learning and Teaching activities (Further Info) Total Hours: 100 ( Lecture Hours 22, Seminar/Tutorial Hours 11, Formative Assessment Hours 1, Summative Assessment Hours 2, Programme Level Learning and Teaching Hours 2, Directed Learning and Independent Learning Hours 62 )
Assessment (Further Info) Written Exam 100 %, Coursework 0 %, Practical Exam 0 %
Additional Information (Assessment) 100% exam
Feedback Not entered
Exam Information
Exam Diet Paper Name Hours & Minutes
Main Exam Diet S2 (April/May)2:00
Learning Outcomes
After successful completion of this course a student will
be able to:
- state the Barkhausen criterion for oscillation and to apply it appropriately to oscillator circuits;
- analyse and design oscillator circuits based on the phase shift oscillator, Wien bridge oscillator or Colpitts/Hartley oscillator and know how to stabilise oscillation frequency and amplitude without significant harmonic distortion;
- analyse and design a Schmitt trigger circuit and apply it to a relaxation oscillator to generate square or triangle waveforms (including voltage-controlled architecture);
- demonstrate the replacement of a resistor with a switched capacitor circuit and analyse the effect of the main parasitic elements;
- perform a z-plane analysis of simple switched capacitor circuits;
- analyse and design switched capacitor filters;
- understand and demonstrate how to design switched capacitor circuits that are insensitive to parasitic components.
- - analyse and design phase-locked loop circuits based on a first order loop operating in the locked condition;
- demonstrate an ability to analyse the functionality of active filter circuits using standard nodal analysis techniques;
- describe the basic principles of active filter design (i.e. pass/stop band, cut-off frequency);
- describe and analyse the application of low pass filter approximations in the design of frequency sensitive circuits;
- use first and second order sections, to implement low pass, high pass filter responses;
- design low pass and high pass filters using the Butterworth and Chebyshev approximations;
- compare and contrast the main characteristics of the Butterworth, Chebyshev and Bessel approximations (pass band ripple, roll-off, phase response);
- describe the significance of component sensitivity analysis in the design of active filters and perform a simple sensitivity analysis for a given filter section and response.

Reading List
Active Filter Design, Waters, (Macmillan) Out of print.

Design with Operational Amplifier and Analog Integrated Circuits, Franco, (McGraw-Hill) 1988, ISBN: 0-07-021799-8.

Operational Amplifiers with Linear Integrated Circuits, Stanley, (Merrill) 1984, ISBN: 0-675-20090-3.

Network Analysis & Synthesis, Kuo, (Wiley) 1962, Library of Congress number 66-16127.

Integrated Electronics, Millman & Halkias, (McGraw-Hill) 1972, Library of Congress number 79 172657.

Introduction to Modern Network Synthesis, Van Valkenburg, (Wiley) 1960, Library of Congress number 60-10328.

Modern Filter Theory & Design, Temes & Mitra, (Wiley) 1973, ISBN 0-471-85130-2.

Handbook of Filter Synthesis, Zverev, (Wiley) 1967, Library of Congress number 67-17352.

Circuit Theory, Volume 2, Scanlon, Levy, Oliver & Boyd, 1973, ISBN 0-05-002687-9
Additional Information
Graduate Attributes and Skills Not entered
Keywordsmicroelectronics semiconductor analogue
Course organiserDr Les Haworth
Tel: (0131 6)50 5624
Course secretaryMrs Sharon Potter
Tel: (0131 6)51 7079
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