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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
Beyond 3G wideband and high linearity ADCs
TL;DR: The paper gives an overview of the most common ADC architectures to achieve this goal: Flash, Pipeline, Successive Approximation and Sigma Delta ADCs and efficient or still promising techniques are proposed to enhance performance.
Journal ArticleDOI
A 95-dB DR second order incremental ΣΔ ADC for multi-channel healthcare application
TL;DR: A second order incremental ΣΔ analog-to-digital converter in 0.35 μm CMOS technology is proposed for minimizing power consumption and achieving high resolution to meet the requirement of multi-channel healthcare applications.
Dissertation
A subsampling delta-sigma modulator for global navigation satellite systems
TL;DR: The proposed CT-?? modulator has significant improvements over previously published subsampling modulators as it provides jitter and alias suppression and excess loop delay compensation to improve the dynamic range, thus enabling the modulator to be utilized in subsamplings receivers when a relatively low sampling rate is desired.
Journal ArticleDOI
Fully differential implementation of a Delta-Sigma Modulator based on the Pseudo-Pseudo Differential Technique
TL;DR: This paper presents the first silicon implementation of a second order Comparator-Based Switched-Capacitor (CBSC) delta-sigma modulator based on a variation of the P2D technique, which shows an improvement in the Peak SNDR, DR, and SFDR over its pseudo differential counterpart, which is the preferred differential implementation for CBSC circuits.
Switched mode transmitter architectures
TL;DR: A number of switched mode transmitter architectures are described, both polar and Cartesian ones, which use a combination of supply voltage modulation and other techniques, such as radio frequency pulse width modulation (RF PWM) or polar delta sigma modulation.
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.