Design of Discrete-time Analog Systems

Lecturer:

Tutor:

Supervisor:

Department of Circuit Theory

Synopsis:

This subject deals with discrete-time analog circuits and systems, namely switched-capacitor (SC) and switched- current (SI) ones. The basic building blocks of SC and SI circuits are described and their behaviour and properties are discussed. Optimum design procedures are presented. Attention is devoted to the ideal and non-ideal circuit description, simulation and particular subsystems design.

Requirements:

Syllabus of lectures:

1. Discrete-time analog systems: a survey, properties, description

2. Switched-capacitor circuits - properties, basic building blocks of SC systems and subsystems

3. Time-domain and frequency-domain description. Charge equation approach.

4. Software means for SC circuits simulation.

5. Switched-current circuits - a principle of operation, dynamic current mirror

6. SI circuit description and simulation methods

7. Non-ideal properties of SC- and SI circuits. Simulation software.

8. Conditions and problems of discrete-time circuits design. p-z transformation.

9. Design procedures for SC- and SI circuit design.

10. 2nd-order SC- and SI filters design. Optimization conditions

11. Higher-order SC- and SI filters. Design methods, optimization conditions.

12. SC- and SI filter design with respect to non-ideal behaviour of basic functional blocks

13. A general design optimization methods

14. A comparison of SC and SI systems, future development

Syllabus of tutorials:

1. Properties comparison of continuous-time and discrete-time systems. MAPLE software.

2. SC circuit description by using difference equations

3. A charge equations based description of SC circuits.

4. SC-circuit simulation software. SC-SYRUP.

5. A circuit description of SI circuits - a comparison to SC

6. An application of nodal-analysis approach in SI circuit simulation.

7. Software means for SI circuit simulation. SI-SYRUP.

8. A simulation of non-ideal SC- and SI circuits. SPIN software.

9. A simulation of non-ideal SC- and SI circuits. SPICE software application.

10. A design and verification of SC biquads.

11. A design and verification of SI biquads.

12. Filter design by using functional simulation of LC-prototype.

13. Design optimization with respect to the non-ideal circuit behaviour

14. Semestral works presentation

Study Objective:

Study materials:

1. Unbehauen, R., Cichocki, A.: MOS Switched capacitor and Continuous-Time Integrated Circuits and Systems. Springer-Verlag, Berlin, 1989

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

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Elektronika-inženýrský blok (compulsory elective course)
• Elektronika-inženýrský blok (compulsory elective course)