This book presents the study, design, modulation, optimization and
implementation of low power, passive DT-ΣΔMs for use in audio
applications. The high gain and bandwidth amplifier normally used for
integration in ΣΔ 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.