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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
An Analog-to-Digital Converter Using Delta-Sigma Modulator Network
TL;DR: An analog-to-digital converter using a deltasigma modulator network is proposed, and signal-level simulations show proper operations of present ADCs consisting of either first-order or second-order delta-sigma modulators.
Book ChapterDOI
Dow Theory’s Peak-and-Trough Analysis Justified
TL;DR: In the analysis of dynamic financial quantities such as stock prices, equity prices, etc., reasonable results are often obtained if we only consider local maxima (peaks) and local minima (troughs) and ignore all the other values as discussed by the authors.
Proceedings ArticleDOI
A 14-mW, 153.6-MHz clock-rate Δ∑ modulator for WCDMA with 77-dB SFDR using constant resistance CMOS input sampling switch
TL;DR: The use of an optimized bootstrapped CMOS switch is proposed in this paper, featuring a constant on- resistance over the entire input signal range, to address the input switch sampling distortion issue.
MonographDOI
On High-Speed Digital-to-Analog Converters and Semi-Digital FIR Filters
TL;DR: Radio-frequency digital- to-analog converter (RFDAC) provides high-speed and high-resolution digital-to-analogue converters for radio-frequency telecommunications systems.
Proceedings ArticleDOI
Reconfigurable multi-band quadrature ΣΔ modulators
TL;DR: In this paper, a new design methodology for reconfigurable quadrature band-pass ΣΔ modulators is proposed, which uses architectures, which lock various range of IF frequencies to the sampling frequency for lower order quadratures modulators.
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.