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The Design of Low-Voltage, Low-Power Sigma-Delta Modulators als Buch
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The Design of Low-Voltage, Low-Power Sigma-Delta Modulators

'The Springer International Series in Engineering and Computer Science'. Auflage 1999. Book. Sprache:…
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Oversampling techniques based on sigma-delta modulation are widely used to implement the analog/digital interfaces in CMOS VLSI technologies. This approach is relatively insensitive to imperfections in the manufacturing process and offers numerous … weiterlesen
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The Design of Low-Voltage, Low-Power Sigma-Delta Modulators als Buch

Produktdetails

Titel: The Design of Low-Voltage, Low-Power Sigma-Delta Modulators
Autor/en: Shahriar Rabii, Bruce A. Wooley

ISBN: 0792383613
EAN: 9780792383611
'The Springer International Series in Engineering and Computer Science'.
Auflage 1999.
Book.
Sprache: Englisch.
Springer US

31. Oktober 1998 - gebunden - 210 Seiten

Beschreibung

Oversampling techniques based on sigma-delta modulation are widely used to implement the analog/digital interfaces in CMOS VLSI technologies. This approach is relatively insensitive to imperfections in the manufacturing process and offers numerous advantages for the realization of high-resolution analog-to-digital (A/D) converters in the low-voltage environment that is increasingly demanded by advanced VLSI technologies and by portable electronic systems. In The Design of Low-Voltage, Low-Power Sigma-Delta Modulators, an analysis of power dissipation in sigma-delta modulators is presented, and a low-voltage implementation of a digital-audio performance A/D converter based on the results of this analysis is described. Although significant power savings can typically be achieved in digital circuits by reducing the power supply voltage, the power dissipation in analog circuits actually tends to increase with decreasing supply voltages. Oversampling architectures are a potentially power-efficient means of implementing high-resolution A/D converters because they reduce the number and complexity of the analog circuits in comparison with Nyquist-rate converters. In fact, it is shown that the power dissipation of a sigma-delta modulator can approach that of a single integrator with the resolution and bandwidth required for a given application. In this research the influence of various parameters on the power dissipation of the modulator has been evaluated and strategies for the design of a power-efficient implementation have been identified. The Design of Low-Voltage, Low-Power Sigma-Delta Modulators begins with an overview of A/D conversion, emphasizing sigma-delta modulators. It includes a detailed analysis of noise in sigma-delta modulators, analyzes power dissipation in integrator circuits, and addresses practical issues in the circuit design and testing of a high-resolution modulator. The Design of Low-Voltage, Low-Power Sigma-Delta Modulators will be of interest to practicing engineers and researchers in the areas of mixed-signal and analog integrated circuit design.

Inhaltsverzeichnis

1. Introduction. 2. Trends Toward Low-Voltage Power Supplies. 3. Analog-to-Digital Conversion. 4. Power Dissipation in Sigma-Delta A/D Converters. 5. Design of a Low-Voltage, High-Resolution Sigma-Delta Modulator. 6. Implementation of an Experimental Low-Voltage Modulator. 7. Conclusion. A. Fundamental Limits. B. Power Dissipation vs. Supply Voltage and Oversampling Ratio. C. Effects of Capacitor Mismatch. D. Test Setup. Index.
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