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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A 2nd order fully-passive noise-shaping SAR ADC with embedded passive gain
TL;DR: An opamp-free solution to implement 2nd order noise shaping in a successive approximation register analogto-digital converter is presented, which has high power efficiency and is realized by charge-redistribution.
Proceedings ArticleDOI
A heuristic solution to the optimisation of flutter control in compression systems (and to some more binary quadratic programming problems) via ΔΣ modulation circuits
TL;DR: It is shown that a specific class of Unconstrained Binary Quadratic Programming (UBQP) problems, including those arising in the optimisation of flutter control via blade mistiming, can be solved by means of ΔΣ modulators.
Constant-Resistance CMOS Input Sampling Switch for GSM/WCDMA High Dynamic Range Modulators
TL;DR: In this paper, the use of an optimized bootstrapped CMOS switch is proposed to address the nonlinearity of the input sampling switch in a switched-capacitor delta-sigma analog-to-digital converter (ADC).
Proceedings ArticleDOI
Second order dynamic element matching technique for low oversampling delta sigma ADC
TL;DR: This work proposes a modified second order dynamic element matching technique to alleviate the problem for broadband ADCs, which target a SNDR greater than 100dB.
Proceedings ArticleDOI
A K-Delta-1-Sigma modulator for wideband analog to digital conversion
TL;DR: The K-Delta-1- Sigma (KD1S) modulator-based ADC topology employs inherent time-interleaving with a shared opamp and K-quantizing paths and can achieve significantly higher conversion bandwidths when compared to the traditional delta-sigma ADCs.
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.