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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
A hardware efficient 3-bit second-order dynamic element matching circuit clocked at 300MHz
TL;DR: A robust and hardware efficient dynamic element matching (DEM) algorithm is developed and used to design a 4th-order bandpass (BP) mismatch-shaping circuit, moved inside the feedback loop of a 6th- order bandpass continuous-time delta-sigma modulator.
Journal ArticleDOI
Energy-Efficient PRBS Impedance Spectroscopy on a Digital Versatile Platform
TL;DR: This article presents the digital design of a versatile and low-power broadband impedance spectroscopy (IS) system based on the pseudorandom binary sequence (PRBS) excitation and studies two main algorithms used for PRBS-based IS and implements both of them on the ultralow- power GAP-8 digital platform.
Journal ArticleDOI
Loop-Filter Design and Analysis for Delta-Sigma Modulators and Oversampled IIR Filters
TL;DR: This paper presents a method for generalized loop-filter synthesis that can implement a chosen NTF and STF independent of internal loop- filter structure or filter order.
Journal ArticleDOI
Effect of VCSEL Characteristics on Ultra-High Speed Sigma-Delta-Over-Fiber Communication Links
Ibrahim Can Sezgin,Johan S. Gustavsson,Tamas Lengyel,Thomas Eriksson,Zhongxia Simon He,Christian Fager +5 more
TL;DR: In this article, the effects of VCSEL characteristics on a 32-Gbps sigma-delta-over-fiber (SDoF) communication link with a 50-m, OM4, multimode optical fiber were investigated.
Journal ArticleDOI
Analysis of sigma-delta converters for MEMS sensors using power supply voltage as reference
TL;DR: In this article, the authors considered the effects that take place when the supply voltage is used as reference voltage for the system instead of the usual reference voltage produced by a band-gap circuit (sigma-delta modulator ratiometric with respect to the power supply).
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.