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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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Proceedings ArticleDOI
Phase-Modulated DSM-PWM Hybrids with Pulse Length Restriction for Switch-Mode Power Amplifiers
TL;DR: The proposed system overcomes the inherent signal quality limits of digital systems with fixed clock frequencies by applying a phase modulated clock and demonstrates that it is possible to achieve the performance of conventional concepts at less than half of the bit rate.
Journal ArticleDOI
Multi-step extended-counting analogue-to-digital converters
TL;DR: A three-step A/D converter using only a single opamp and a two-slope ADC achieves an accuracy comparable to that of a third-order incremental ADC, but with much higher power efficiency.
Proceedings ArticleDOI
A fourth-order feedforward continuous-time delta-sigma ADC with 3MHz bandwidth
TL;DR: A fourth-order feedforward continuous-time delta-sigma modulator is presented, which takes an active-RC OpAmp as the first stage because of the high-linearity requirement, and the other three stages are composed by Gm-C integrators.
Journal ArticleDOI
A compact low-noise broadband digital picoammeter architecture
TL;DR: A low-noise, broadband, broadband architecture and related operation solutions are proposed for portable and low-cost time-domain acquisition of currents with effective resolution in the order of 1 pA and below and a Track-and-Hold circuit synchronized with the reset is exploited.
Acquisition de données à haute résolution et faible latence dédiée aux capteurs avioniques de position
TL;DR: The design and the development of a smart interface for position sensors dedicated to flights and the conversion of the communication network and the detection mechanisms are introduced, which has a direct impact on aircrafts.
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.