Course detail

A/D and D/A Converters

FEKT-MADPAcad. year: 2015/2016

Preprocessing of analog signal, parallel converters with switched resistor networks and switched current sources, parallel and serial D/A converters, indirect D/A converters, converters with cyclic resistor interchange, comparative A/D converters, compensating A/D converters, integrating A/D converters, A/D converters with automatic correction of conversion characteristic, U/f and f/U converters, D/f converters, digital measurement of time intervals, phase, frequency.

Language of instruction

Czech

Number of ECTS credits

Mode of study

Not applicable.

Guarantor

prof. Ing. Kamil Vrba, CSc.

Department

Department of Telecommunications (UTKO)

Learning outcomes of the course unit

On completing the course, students will be able to:
- orient themselves in the selection of circuits for signal preprocessing such as electronic switched circuits, analog multiplexers or demultiplexers,
- be familiar with filtering circuits designed for cooperation with A/D and D/A converters,
- be able to design and apply sampling circuits with memory,
- understand the parameters of A/D converters and be able to design solutions to various types of A/D converters,
- understand the parameters of D/A converters and be able to design them and analyse, and
become familiar with solutions also to other types of converters such as U/F or D/F converters.

Prerequisites

The basic knowledge of analog and digital circuits is required.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Techning methods include lectures, computer laboratories and practical laboratories. Course is taking advantage of e-learning (Moodle) system.

Assesment methods and criteria linked to learning outcomes

In laboratory exercises, students can obtain up to 20 points. The examination proper is a written examination and students can gain for it up to 80 points. The examination focuses on the ability to orient oneself in the design of simple circuits for A/D and D/A converters and the ability to analyse complex integrated structures of A/D and D/A converters.

Course curriculum

1. Amplifiers with electronic switched amplification
2. Precise analog multiplexers or demultiplexers
3. Filters for A/D and D/A converters
4. Sampling circuits with memory: parameters and circuit solutions
5. D/A converters
5.1 Parameters of D/A converters
5.2 Circuit solutions of D/A converters
6. A/D converters
6.1 Parameters of A/D converters
6.2 Circuit solutions of A/D converters
7. U/F and D/F converters

Work placements

Not applicable.

Aims

The aim of the course is to introduce students to the basic principles of A/D and D/A converters, the properties of integrated converters and their possible applications. They should be able to orient themselves in signal pre-processing circuits such as precise switched amplifiers, anti-aliasing filters, and sampling circuits with memory.

Specification of controlled education, way of implementation and compensation for absences

Laboratory lessons and computer exercises are obligatory. Justified absence from laboratory lessons or computer exercises can be made up after prior arrangement with the instructor, usually in the credit week.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

ANALOG DEVICES: Data Converter - Reference Manual. Norwood 2000
Háze, J. a kol..: Teorie vzájemného převodu analogových a číslicových signálů. Učební text, Brno 2010. (CS)
SHEIGOLD D.H. ed.: Analog Digital Conversion Hadbook. Prentice Hall, London 1998
TIEZE U., SCHENK CH.: Electronic Circuits. Design and Applications. Springer, Heidelberg 1996
Vrba, K., Kubánek, D.: A/D a D/A převodníky pro integrovanou výuku VUT a VŠB-TUO

Type of course unit

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Kamil Vrba, CSc.

Syllabus

Application potentials of A/D, D/A, U/F, F/U and D/F converters
Signal preprocessing: programmable amplifiers- principles of operation, programmable instrument amplifiers, integrated programmable amplifiers Burr-Brown and Harris Semiconductor, differential programmable amplifiers, analog multiplexers and demultiplexers
Filtering circuits used in coverters: programmable integrated antialiasing filters, filters for suppressing quantization noise, filters for indirect D/A converters used in digitally controlled calibration standards
Sample Hold/Track circuits: sampler parameters, fast samplers, samplers with large input resistance, examples of solving integrated samplers, application principles
D/A converters: basic classification, d.c. and dynamic converter parameters
D/A converters: switches used in converters, parallel D/A converters with reference voltage sources, with weighted resistors, with the R-2R resistor network, with cyclic resistor interchange, with weighted current sources
D/A converters with non-linear characteristic, serial D/A converters, indirect D/A converters, solution examples and application potentials of integrated converters, recommendations on the design of systems with integrated D/A converters
A/D converters: converter parameters
A/D converters: parallel comparative converters, convertrs with successive comparison, compensating and following converters
A/D converters: sigma-delta converters, presampled sigma-delta converters, converters with prediction, selected integrated converters
U/F converters: with MKO and a reference voltage (Analog Devices, Burr-Brown), crystal-controlled converters, with suppressed phase noise, converters without a reference sosurce
D/F converters, F/U converters

Laboratory exercise

39 hod., compulsory

Teacher / Lecturer

doc. Ing. David Kubánek, Ph.D.

Syllabus

Introducing the problems
8-bit digital to analog converter
8-bit analog to digital converter
Digital to frequency converter
Sampling amplifier
Differential analog multiplexer
Measurement of the features of A/D and D/A converters used in sound cards
Integrated serial A/D and D/A converters LTC 1257 and LTC 1286
Computer-aided simulation of A/D and D/A converters using PSpice and MicroCap programs
Integrating A/D converters used in METEX multimeters
A/D and D/A cards for PC - PCA 1408S a PCI-6024E
Make-up measurements
Evaluation of measurement results, credit pass

VUT

Faculties

University Institutes

Parts

A/D and D/A Converters

Type of course unit