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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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Journal ArticleDOI
Design Techniques for Wideband Discrete-Time Delta-Sigma ADCs With Extra Loop Delay
TL;DR: This paper shows how the addition of independent feedback and feed-forward branches to the loop filter can compensate the extra loop delay, and restore the desired signal and noise transfer functions.
Journal ArticleDOI
Sigma-delta digital drive signals for switchmode power amplifiers
Vandana Bassoo,Michael Faulkner +1 more
TL;DR: In this paper, a novel all-digital approach to generate a pulse train to drive switch-mode power amplifiers is proposed, where Sigma-delta (ΣΔ) techniques are used to shape time quantisation noise away from the band of interest.
Journal ArticleDOI
Experimental Demonstration of MASH Based Sigma Delta Radio over Fiber System for 5G C-RAN Downlink
Muhammad Usman Hadi,Muhammad Umair Hadi,Nelofar Aslam,Rafaqat Ali,Kiran Khurshid,Pier Andrea Traverso,Giovanni Tartarini +6 more
TL;DR: It is concluded that S-DRoF substantiates the desired range of the 5G C-RAN fronthaul networks.
Journal ArticleDOI
A 0.4 V 63 $\mu$ W 76.1 dB SNDR 20 kHz Bandwidth Delta-Sigma Modulator Using a Hybrid Switching Integrator
TL;DR: The designed delta-sigma modulator uses a proposed hybrid switching integrator and operates at a low supply voltage without clock boosting or bootstrapped switches, which can replace commonly-used clock boosting techniques, which rely on internal high-voltage generation circuits.
Journal ArticleDOI
A Low-Noise CMOS Image Sensor With Digital Correlated Multiple Sampling
TL;DR: This paper presents a low noise CMOS image sensor using conventional 3T active pixel with Nwell/Psub diode as photo detector and indicates that image sensor with low noise can be achieved by DCMS without the CIS process and column amplification.
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.