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Simulation and Optimization of Analog Circuits (NM 6016)

Lecturer Priv.-Doz. Dr.-Ing. Helmut Gräb 45 hours (2 weeks) each spring

Targets

• Fundamentals of numerical optimization processes and some aspects of statistics
• Applying optimality conditions to formulate circuit design tasks like worst-case and yield analysis and optimization
• Differentiated knowledge of circuit sizing tasks
• To know what happens inside EDA tools for sizing as a designer, and to be prepared for developing such EDA tools.

Contents

• Lectures and Tutorials. Lagrange function, optimality conditions (constrained, unconstrained); worst-case analysis, classic, realistic, general; multivariate statistical distribution, transformation of distribution functions, expectation values, estimation of expectation values; yield analysis, statistical, geometric, Monte-Carlo analysis; circuit sizing, yield optimization/design centering; structure of an optimization process, univariate optimization, line search, multivariate optimization, polytope method, coordinate search; Newton approach (Quasi-Newton, Levenberg-Marquardt, Least-Squares, Conjugate Gradient; Quadratic Programming (equality/inequality constraints), Sequential Quadratic Programming (SQP); structural analysis of analog circuits, analog sizing rules. Principles of circuit simulation: DC/AC/TR analysis.
• Laboratory. Circuit analysis and optimization with WiCkeD(R); nominal design, sizing rules, circuit performance features; worst-case and yield analysis, deterministic and statistical; yield optimization.

Exam/Assignments

The examination is in written form with open book policy.

Material

A compendium, exercises and lab instructions will be provided at the start of the course, electronically and in printed form. Further material will be provided electronically during the course.

Literature

• R. Fletcher, Practical Methods of Optimization, John Wiley & Sons, 2nd Edition, 2000.
• H. Graeb, Analog Design Centering and Sizing, Springer, 2007.