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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
Analysis of a Sigma–Delta Resistance-to-Digital Converter for Differential Resistive Sensors
TL;DR: A direct resistance-to-digital converter (RDC) that is suitable for differential resistive sensors is proposed and analyzed and shows that the proposed RDC has negligible sensitivity to variations in circuit parameters.
Journal ArticleDOI
A Low-Power Configurable Neural Recording System for Epileptic Seizure Detection
TL;DR: A low-power configurable neural recording system capable of capturing and digitizing both neural action-potential (AP) and fast-ripple (FR) signals and the functionality of epileptic seizure detection through FR recording is demonstrated.
Journal ArticleDOI
A Quadrature Bandpass Continuous-Time Delta-Sigma Modulator for a Tri-Mode GSM-EDGE/UMTS/DVB-T Receiver
TL;DR: A second-order multi-bit quadrature bandpass continuous-time delta-sigma modulator employing a power-scaling technique (PST) and a quadratures mismatch scrambler (QMS) for a tri-mode GSM-EDGE/UMTS/DVB-T low-IF receiver is reported in this paper.
Journal ArticleDOI
A Spurious-Free Switching Buck Converter Achieving Enhanced Light-Load Efficiency by Using a $\Delta \Sigma$ -Modulator Controller With a Scalable Sampling Frequency
M. K. Alghamdi,Anas A. Hamoui +1 more
TL;DR: Measurements results demonstrate that this buck converter achieves a spurious-free output with a noise floor below -60 dBm and voltage ripples below 70 mV over its full loading range, with a peak efficiency of 95.1%.
Journal ArticleDOI
Incremental Delta-Sigma ADCs: A Tutorial Review
TL;DR: Various design techniques for improving the energy-efficiency of the IADCs are described and intended to serve as a starting point for the development of a new energy-efficient IADC.
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.