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
More filters
Fully Differential Difference Amplifier based Microphone Interface Circuit and an Adaptive Signal to Noise Ratio Analog Front end for Dual Channel Digital Hearing Aids
TL;DR: In this article, a dual-channel directional digital hearing aid (DHA) front-end using a fully differential difference amplifier (FDDA) based Microphone interface circuit (MIC) for a capacitive Micro Electro Mechanical Systems (MEMS) microphones and an adaptive-power analog font end (AFE) is presented.
Proceedings ArticleDOI
On Energy-Reliability Tradeoff in Analog-to-Digital Converters with Imperfect Comparators
Hossein Kakavand,A. El Gamal +1 more
TL;DR: In this article, the tradeoff between energy-per-conversion and comparator reliability for Flash, first order SigmaDelta, and Beta expansion analog-to-digital converter architectures is investigated.
Proceedings ArticleDOI
A simplified single-inductor dual-output DC-DC buck converter architecture with a fully digital Σ-Δ based controller
Nijad Anabtawi,Rony Ferzli +1 more
TL;DR: The proposed converter features a simplified control loop that eliminates duplication of the controller sub blocks and allows for use of a single Pulse Width Modulator, compensator, and comparator to regulate the two outputs, therefore reducing overall system complexity.
Journal ArticleDOI
Comparison of Hysteresis Based PWM Schemes ΔΣ-PWM and Direct Torque Control
TL;DR: In this paper, the authors compared ΔΣ-PWM with direct torque control (DTC) using simulation models and found that the Δ-Σ PWM shows higher torque ripple than DTC.
Journal ArticleDOI
A reconfigurable low-pass/high-pass $$\varDelta \varSigma$$ΔΣ ADC suited for a zero-IF/low-IF receiver
TL;DR: The paper presents a novel reconfigurable dynamic element matching technique which efficiently addresses the digital to analog converter mismatch for both the high-pass and the low-pass delta sigma modulators.
References
More filters
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.