Study Abroad and Exchanges

Modules

Modules

EEE2014 : Semiconductor Devices and Analogue Electronics

Semesters
Semester 1 Credit Value: 20
ECTS Credits: 10.0

Aims

To describe to the student, the operation of commercially important semiconductor devices (diodes, BJT, MOSFET) and how these are described by the semiconductor physics.

To enable the student to understand how transistors form key analog circuit building blocks – from single transistor amplifiers to OpAmps. To explain the continued and increasing importance of analog circuits and how the course content relates to the student’s day to day life.

Outline Of Syllabus

Global perspectives
The importance of semiconductor devices in electronic systems and how ongoing developments are changing the field of electronics. Similarly the increasing importance of analog circuits as we move towards “more than Moore” and systems on a chip.

Semiconductor Physics
Bond & Band models; Ohm’s law; Einstein Relation; Drift and diffusion current; Current magnitudes; charge transport in solids; Wave-particle duality; DeBroglie wavelength; Heisenberg uncertainty principle; The Quantum mechanics concept;; Tunnelling; E-K bands in solids

p-n junction:
Ideal diode I-V characteristic; Dynamic equilibrium; Built-in voltage; Current flow in p-n junctions; Shockley’s equation; Ideality factor; Generation – Recombination; Small signal equivalent circuit; Characterization of semiconductor devices; Tunnel diode;

Bipolar Transistor:
Simple description of operation, Definitions of gain; Derivation of expressions for base, collector and emitter current; D.C. characteristic, Ebers-Moll equations; Small signal equivalent circuit; Hybrid- model;

MOSFET:
Depletion, accumulation and inversion; Importance of Fermi Energy position; Mode of operation; Pinch-off; Threshold voltage; Enhancement and depletion mode; Analysis of operation; I-V relation; Short channel effects; Transistor delay time; Small signal equivalent circuit.

Single Transistor Amplifiers
Single transistor amplifiers utilizing both BJT or MOSFET transistors. Key operational relationships of BJT and MOSFET transistors from the perspective of creating analog circuits. BJT: common-base, common-collector, common-emitter, MOSFET: common-gate, common-source, common-drain.


Transistors circuit building blocks
The key building blocks for transistor analog circuits including current mirrors, diode connected MOSFETs, Cascode circuits, active resistors, potential dividers, current mirrors. Operational Transconductance Amplifiers and the construction of Op-amps from individual transistors.

Power amplifiers and op-amps
Class A, B, AB and C, D power amplifiers. Operational amplifier including summation, differencing, comparator, and integration circuits. Analysis of the gain and frequency response with both direct connection and feedback. Analysis of distortion, noise and common mode rejection.


D-A and A-D conversion techniques

Weighted resistors; ladder network; ramp conversion; successive approximation; synchronisation methods.SAR, Dual weighted, Sigma-Delta, and Flash analog to digital conversion techniques. Voltage summing amplifier as a DAC.

Laboratory Work

Amplifier design
Simulations of common emitter amplifier design utilising SaberRD software tools to study the effect of capacitance on the frequency response of an amplifier

Experimental amplifier testing
To understand the utilisation of Op-Amps for voltage amplification. To explore frequency response Gain -Bandwidth Product, Slew Rate limitations offset voltage and bias current of the operational amplifier. To understand use of operational amplifiers in simple summing and difference circuits.

Teaching Methods

Teaching Activities
Category Activity Number Length Student Hours Comment
Guided Independent StudyAssessment preparation and completion82:3020:00Case study assignment
Guided Independent StudyAssessment preparation and completion24:309:00Lab report
Guided Independent StudyAssessment preparation and completion128:0028:00Revision for final exam
Guided Independent StudyAssessment preparation and completion12:002:00Final exam
Scheduled Learning And Teaching ActivitiesLecture62:0012:00Tutorials
Scheduled Learning And Teaching ActivitiesLecture242:0048:00N/A
Scheduled Learning And Teaching ActivitiesPractical23:006:00Electronics laboratory
Guided Independent StudyIndependent study302:3075:00General reading; reviewing lecture notes; solving practice problems
Total200:00
Teaching Rationale And Relationship

Lectures provide core material and guidance for further reading, problem solving practice is provided through tutorials. Work is further re-enforced through laboratory sessions.

Assessment Methods

The format of resits will be determined by the Board of Examiners

Exams
Description Length Semester When Set Percentage Comment
Written Examination1201A80N/A
Exam Pairings
Module Code Module Title Semester Comment
EEE2016Analogue Electronics1N/A
Other Assessment
Description Semester When Set Percentage Comment
Practical/lab report1M102 assignments worth 7.5% each (1000 words per exercise)
Case study1M10Case study and report (6 page maximum)
Assessment Rationale And Relationship

The examination provides the opportunity for the student to demonstrate their understanding of the lecture course material. The report enables students to research a topic not covered in the lectures and so put their understanding in to practice. Laboratory sessions offer the opportunity for reinforcement of key concepts through the use of hands on experiments, designed to complement the material presented as part of the formal lectures.

Semester 1 Study Abroad students will be able to sit the final assessment earlier.

Reading Lists

Timetable