Open AccessBook
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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Proceedings ArticleDOI
Comparison of Two All-Digital Frequency Synthesizers with a Jitter Removal Circuit
TL;DR: This work presents the hardware implementation of two all-digital frequency synthesizers based on SDMs which are afterwards corrected by a laboratory circuit for suppressing the jitter effect introduced by the clock reference of the FPGA.
Proceedings ArticleDOI
A behavior-oriented simulation tool for design and optimization of sigma-delta ADCs
TL;DR: A behavior-oriented simulation tool is proposed for the designing and optimizing of sigma-delta ADCs and the imperfections of the analog cells as integrators, comparator, and the CpAMPs are analyzed in detail, which guides the design towards high performance.
Patent
Method for designing band pass delta-sigma modulator, band pass delta-sigma modulator, signal processing device, and radio transceiver
TL;DR: In this article, a band pass delta sigma modulator is obtained for a desired frequency by replacing z in a z domain model of a low pass delta-sigma modulators with z′.
The Image-Reject Continuous-Time Quadrature Bandpass DS Modulator
TL;DR: In this paper, an image-reject continuous-time (CT) quadrature bandpass (QBP) DS modulator using a tailored signal-transfer function (STF) design is presented.
Journal ArticleDOI
Experimental implementation of $$\Delta \Sigma $$ Δ Σ AD modulator with dynamic analog components
Chunhui Pan,Hao San +1 more
TL;DR: In this paper, a 2nd-order multi-bit AD modulator with dynamic analog components for low power and high signal to noise and distortion (SNDR) application is presented.
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.