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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
Time-Continuous Delta-Sigma A/D Converters: From Theory to Practical Implementation
TL;DR: A brief summary of the key aspects of CT delta-sigma modulators is given in this chapter, illustrated by recent CT implementations.
Proceedings ArticleDOI
Integrated and autonomous conductivity-temperature-depth (CTD) sensors for environmental monitoring
TL;DR: In this article, an electro impedance spectroscopy (EIS) based approach is proposed for sensing complex impedance of biointerfaces with low power consumption and high accuracy, which can achieve lifetime up to 1 year using button-size batteries.
Journal ArticleDOI
Continuous calibration of Rogowski coil current transducer
TL;DR: In this article, the authors proposed a continuous calibration system which features a reference conductor added coaxially to the primary conductor and a proportional-integral controller integrated in CMOS technology.
Proceedings ArticleDOI
An internally non-linear ADC for a ΣΔ accelerometer loop
TL;DR: It is argued that the best input distribution to use as a general model is the maximum-entropy distribution (for location parameters: the Gaussian distribution) and an externally linear ADC with non-linearly spaced decision boundaries implemented in 0.6μm CMOS is described.
Proceedings ArticleDOI
NTF zero compensation technique for passive sigma-delta modulator
TL;DR: In this paper, the authors proposed a switch capacitor integrator to compensate zeros of Noise Transfer Function (NTF) for single loop low pass passive switched capacitor sigma-delta modulator (PSDM).
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.