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Design of Low Power and Low Area Passive Sigma Delta Modulators for Audio Applications
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Fachbuch
2017

Design of Low Power and Low Area Passive Sigma Delta Modulators for Audio Applications

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Autoren/Autorinnen
ISBN
EAN
978-3-319-57033-4
9783319570334
Artikel-Nr.
KNRDN37
Rabatt
-21.0
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CHF 65.00
CHF
51.35
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1
speech-bubble-svg Beschreibung

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.

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Stichwörter
Inhaltsverzeichnis
1 Introduction 1.1 Motivation and Background 1.2 Book Organization2 Sigma-Delta Modulation 2.1 Introduction 2.2 First Order Sigma-Delta Modulator 2.3 Second Order Sigma-Delta Modulator 2.4 Higher Order Sigma-Delta Modulator 2.4.1 The MASH Structure3 Architecture and High Level Model 3.1 Passive Integrator 3.1.1 Ultra Incomplete Settling 3.1.2 Discrete Time Transfer Function of the SC Integrator 3.1.3 Thermal Noise Analysis 3.2 Modulator Block Diagram 3.2.1 Signal and Noise Transfer Functions 3.3 Proposed Architecture 3.4 High Level Model 3.5 Optimization 3.6 Reducing the Size of the Capacitors4 Electrical Circuits and Simulation Results 4.1 Introduction 4.2 Digital Circuitry 4.2.1 Logic Gates 4.2.2 Delay Circuits 4.2.3 Phase Generator 4.2.4 Flip-Flop 4.3 Amplifiers 4.3.1 Gain G2 4.3.2 Gain Gmid 4.4 Comparator 4.5 Switching Circuitry 4.5.1 Clock Bootstrapped Switch 4.6 Feedback and Reference Voltages 4.7 Monostable Circuit 4.8 Simulation Results 4.8.1 Second Order ΣΔ Modulator 4.8.2 Third Order MASH ΣΔ Modulator 4.8.3 Third Order MASH ΣΔM with Monostable Circuit5 Conclusions 5.1 Final RemarksReferences
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Autoren/Autorinnen
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Autor/-in
Publikation
Schweiz
28.05.2017
Springer Verlag
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Sprache
Englisch
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eBook
PDF
78 Seiten
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