§16§§This book presents the study, design, modulation, optimization and implementation of low power, passive DT-SigmaDeltaMs for use in audio applications. The high gain and bandwidth amplifier normally used for integration in SigmaDelta modulation, is replaced by passive, switched-capacitor branches working under the Ultra Incomplete Settling (UIS) condition, leading to a reduction of the consumed power. The authors describe a design process that uses high level models and an optimization process based in genetic algorithms to achieve the desired performance.§§§ §04§Introduction.- Sigma-Delta Modulation.- Architecture and High Level Model.- Electrical Circuits and Simulation Results.- Conclusions.- References.§§ §02§David Fouto is a researcher in the Department of Electrical Engineering, Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa, Portugal. §Nuno Paulino is a Professor in the Department of Electrical Engineering, Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa, Portugal.§ §02§David Fouto is a researcher in the Department of Electrical Engineering, Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa, Portugal. §Nuno Paulino is a Professor in the Department of Electrical Engineering, Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa, Portugal.§
