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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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Journal ArticleDOI
A Time-Domain Perspective of the Signal Transfer Function of a Continuous-Time $\Delta\Sigma$ Modulator
TL;DR: A time-domain technique is presented to determine the STF of a CTDSM, valid irrespective of whether the loop filter is time invariant or time varying.
Journal ArticleDOI
A 4th-Order Wideband Sigma Delta Modulator Using Linear System Theory Technique
TL;DR: This paper explains how to make the modulator stable with the addition of feed-forward and feed-back branches which are used to compensate the extra loop delay and restore the signal and noise transfer functions.
aEEG analog front end IC for a neonatal brain development monitoring
TL;DR: A phantom mimicking neonate’s body conductivity and size was constructed and results showed that differential method of obtaining the signal is necessary for biosignals which amplitude is in 𝜇V, and tests showed that in order to keep the number of bits low, amplification of the signal was required.
DissertationDOI
Novel systematic phase noise reduction techniques for phase interpolator clock and data recovery
TL;DR: A technique based on digital lock detection was developed for this work that eliminates the phase interpolator systematic jitter in source-synchronous clock and multi-channel data receivers for inter-chip communications.
Book ChapterDOI
Components and Definitions
TL;DR: In this article, the essential transformations of signals, decomposition in harmonic components, and statistical methods are summarized and some examples are given that are applicable to problems in the following chapters.
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.