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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
A CMOS Wearable Infrared Light Intensity Digital Converter for Monitoring Unplanned Self-Extubation of Patients
Cheng-Ta Chiang,Kang-Yu Liu +1 more
TL;DR: In this paper, a complementary metal oxide semiconductor wearable infrared (IR) light intensity digital converter was proposed for monitoring the unplanned self-extubation of patients. But the proposed converter could process the IR light intensity without limitations of the field of view and is immune to ambient optical noise.
Journal ArticleDOI
Low Power, Low Area Digital Modulators using Gate Diffusion Input Technique
TL;DR: The proposed modulators using GDI method provide a significant improvement in the area, power, and power delay product as compared to CMOS.
Proceedings ArticleDOI
A Model of Continuous-Time Sigma Delta Modulation Based on Pulse Frequency Encoding
TL;DR: This paper exploits the parallelism between a first-order sigma-delta modulator and a VCO-based ADC to propose a more general model that links continuous time sigma delta modulators of an arbitrary order with Pulse Frequency Modulators.
Proceedings ArticleDOI
Stability-improved higher order delta-sigma modulator for Hi-Fi docking audio system
TL;DR: Stability improved higher order deltasigma modulator with an additional noise transfer function (NTF) for stability compensation is proposed and it achieves signal-to-noise ratio (SNR) of 119 dB over 44.1kHz and 0.9 of maximum input level.
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.