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Understanding Delta-Sigma Data Converters
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TLDR
This chapter discusses the design and simulation of delta-sigma modulator systems, and some of the considerations for implementation considerations for [Delta][Sigma] ADCs.Abstract:
Chapter 1: Introduction.Chapter 2: The first-order delta-sigma modulator.Chapter 3: The second-order delta-sigma modulator.Chapter 4: Higher-order delta-sigma modulation.Chapter 5: Bandpass and quadrature delta-sigma modulation.Chapter 6: Implementation considerations for [Delta][Sigma] ADCs.Chapter 7: Delta-sigma DACs.Chapter 8: High-level design and simulation.Chapter 9: Example modulator systems.Appendix A: Spectral estimation.Appendix B: The delta-sigma toolbox.Appendix C: Noise in switched-capacitor delta-sigma data converters.read more
Citations
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Proceedings ArticleDOI
A 1-V 90dB DR audio stereo DAC with embedding headphone driver
TL;DR: A 1V 3rd order SigmaDelta audio DAC with headphone driver implemented in 0.18-mum CMOS process achieves 90 dB dynamic range (DR) and consumes 2.6 mW per channel from 1-V supply.
Journal ArticleDOI
An Asynchronous Delta-Modulator Based A/D Converter for an Electronic System Prototyping Platform
TL;DR: This paper presents and validates a compact circuitimplementation of an asynchronous Δ-modulator (ADM) for A/D conversion and supports moderate signal bandwidth and medium-resolution, while occupying very small area.
Journal ArticleDOI
Coding efficiency and bandwidth enhancement in polar delta sigma modulator transmitter
TL;DR: This paper introduces an architecture to enhance coding efficiency (CE) and bandwidth of the delta sigma modulator transmitters using a low pass envelope delta s Sigma modulator (LPEDSM) to reduce the quantization noise and to improve the CE.
Journal ArticleDOI
Split-set data weighted averaging
R. Wang,Gabor C. Temes +1 more
TL;DR: A modified dynamic element matching algorithm, based on splitting the unit element set into subsets, is proposed, which can improve the spur-free dynamic range of data-weighted averaging significantly, without degrading its signal-to-noise ratio.
Proceedings ArticleDOI
Power-amplifier-inserted transversal filter for application to pulse-density-modulation switching-mode transmitters
TL;DR: A power-amplifier filter architecture is described in which a switching-mode power amplifier with pulse density modulation is inserted in each path of a transversal filter, which suppresses the quantization noise that remains at the output of the component power amplifiers as well as amplifies the signal with high efficiency.
References
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Journal ArticleDOI
A higher order topology for interpolative modulators for oversampling A/D converters
TL;DR: Higher order modulators are shown not only to greatly reduce oversampling requirements for high-resolution conversion applications, but also to randomize the quantization noise, avoiding the need for dithering.
Journal ArticleDOI
Decimation for Sigma Delta Modulation
TL;DR: It is shown that digital filters comprising cascades of integrate-and-dump functions can match the structure of the noise from sigma delta modulation to provide decimation with negligible loss of signal-to-noise ratio.
Journal ArticleDOI
An analysis of nonlinear behavior in delta - sigma modulators
Sasan H. Ardalan,J.J. Paulos +1 more
TL;DR: This paper introduces a new method of analysis for deltasigma modulators based on modeling the nonlinear quantizer with a linearized gain, obtained by minimizing a mean-square-error criterion, followed by an additive noise source representing distortion components.
Book ChapterDOI
The Structure of Quantization Noise from Sigma-Delta Modulation
James C. Candy,O. Benjamin +1 more
TL;DR: Simple algebraic expressions for this modulation noise and its spectrum in terms of the input amplitude are derived and can be useful for designing oversampled analog to digital converters that use sigma-delta modulation for the primary conversion.
Journal ArticleDOI
A fourth-order bandpass sigma-delta modulator
TL;DR: The modulator of a bandpass analog/digital (A/D) converter, with 63 dB signal/noise for broadcast AM bandwidth signals centered at 455 kHz, has been implemented by modifying a commercial digital-audio sigma-delta ( Sigma Delta ) converter.