Analog and Sampled-Data Systems

Lecturer:

Tutor:

Supervisor:

Department of Circuit Theory

Synopsis:

The aim of this subject is to present new ways and principles of analog circuit design, especially with respect to the analog signal pre-processing for digital signal processing and transmission systems. An attention is devoted to the current-mode circuits, wide-band building blocks, fast active devices design, integrated, continuous-time filters. The part, oriented to the sampled-data systems, explains the SC and SI circuit principles and operation. Describes the basic building blocks, their non-ideal behavior and design rules. A typical applications of SC and SI circuits are presented, namely for sampled-data filters and D/A and A/D converters.

Requirements:

Syllabus of lectures:

1. New principles and trends in continuous-time and sampled-data analog systems

2. Current-mode analog circuits, voltage-mode-to-current-mode transformation

3. Current-mode building blocks in amplifier design

4. Translinear current-mode building blocks, linear and non-linear application

5. Current-mode filters: design, tunability

6. Micropower circuits: design rules, properties, behavior

7. Sampled-data analog circuits: typical properties, behavior, a comparison to the DSP circuits

8. Switched-capacitor and switched-current circuits, a principle, operation, a circuit description

9. SC and SI fundamental building blocks, circuit arrangement

10. Non-ideal properties of SC and SI circuits, an influence of switch-phasing, a special arrangement

11. SC and SI filter design, noise properties of SC and SI circuits

12. SC and SI converters A/D, D/A

13. Oversampling converters, Delta-Sigma modulators using SC and SI building blocks

14. Signal transfer between digital and sampled-data systems, neural nets using SC and SI circuits

Syllabus of tutorials:

1. A contemporary analog circuit technique: devices, parameters, integration level

2. A comparison of voltage-mode-to-current-mode circuits, adjoint transformation

3. Transconductance amplifier and current conveyor circuit design

4. A design and simulation of the basic translinear building blocks and circuits

5. A design and simulation of OTA-C filter

6. A design and simulation of micropower building block - the first part

7. A design and simulation of micropower building block - the second part

8. SC and SI circuits simulation, software means, MAPLE libraries

9. A design and simulation of chosen SC and SI building blocks

10. A simulation of non-ideal SC and SI circuits using SPIN- and SPICE-software

11. A design of improved SI building blocks - the first part

12. A design of improved SI building blocks - the second part, a simulation of the resulting circuit

13. A Delta-Sigma modulator design

14. Typical SC- and SI-circuit application examples

Study Objective:

Study materials:

1. Toumazou, C., Hughes, J.B., Battersby, N.C.: Switched-Currents an analogue technique for digital technology. Peter Peregrinus, Ltd, 1993

2. Toumazou, C., Lidgey, F.J., Haigh, D.G.: Analogue IC Design: the Current-Mode Approach. Peter Peregrinus, Ltd, 1993

3. Toumazou,C., Battersby,N.C., Porta,S.: Circuits and Systems Tutorial. IEEE Press, New York, 1996

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Electronics - Electronic Systems- structured studies (compulsory course)
• Economics and Management in Electrical Engineering- structured studies (compulsory course)
• Electronics - Electronics and Photonics- structured studies (compulsory course)