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Understanding Delta-Sigma Data Converters
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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Mostly digital ADCs for highly-scaled CMOS processes
TL;DR: This dissertation presents continuous-time delta-sigma modulator ADCs that consist mostly of digital logic gates that use significantly less circuit area and are well- suited to IC processes optimized for fast digital circuitry.
Journal ArticleDOI
A SAR-based ΣΔ modulator using shared DAC
TL;DR: A new successive approximation (SA) quantizer based on the elimination of the digital to analog converter (DAC) from the quantizer structure is presented and the feedback DAC block of the ΣΔ modulator is shared by SA quantizer.
Proceedings ArticleDOI
Emerging sigma-delta modulation techniques for an efficient digitization in the Internet of Things
TL;DR: An overview of ΣΔ modulation techniques for the efficient implementation of analog/digital interfaces in IoT devices and main design challenges derived from their integration in deep nanometer CMOS are identified.
Analysis and Modeling of Non-idealities in VCO-Based Quantizers Using Frequency-to-Digital and Time-to-Digital Converters
TL;DR: In this article, the authors present a list of symbols and symbols to represent knowledge, knowledge, and belief in the creation of the world, including triangles, columns, figures, and symbols.
Journal ArticleDOI
Noise Filtering and Linearization of Single-Ended Sampled-Data Circuits
TL;DR: A novel approach is described, which can also reduce even-order distortion, another major limitation of analog circuits, and may also allow the use of single-ended circuits in applications where usually differential structures are needed.
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.