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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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Journal ArticleDOI
Electromechanical-Filter-Based Bandpass Sigma–Delta Modulator
Rui Yu,Yong Ping Xu +1 more
TL;DR: An electromechanical-filter-based continuous-time (CT) bandpass (BP) sigma-delta modulator for wideband digitization at high intermediate frequency (> 70 MHz) is proposed.
Dissertation
Enhanced and disruptive radio-frequency receivers
TL;DR: This Ph.D. contributes with several advances to the state-of-the-art of SDR receiver, and to the so-called SDR DPD concept, following the well-known Software-Defined Radio (SDR) concept.
Algorithmic utilization of LDI transform for discrete-time filter design
TL;DR: The LDI matrix serves to transform the coefficients of the transfer functions of continuous- and discrete-time linear circuits which are connected by the LDI (Lossless Discrete Integration) transform.
Proceedings Article
A low power small area multi-bit quantizer with a capacitor string in Sigma-Delta modulator
Xuxia Wang,Jian Xu,Xiaobo Wu +2 more
TL;DR: An ultra-low power area-efficient fully differential multi-bit quantizer used in Sigma-Delta modulator (SDM) is presented and saves 81% power and 37% area and thus is suitable for ultra- low power applications.
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.