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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Proceedings ArticleDOI
Implementation of Multi-Step Look-Ahead Sigma-Delta Modulators Using IC Technology
TL;DR: It is demonstrated that MSLA SDMs are a viable alternative to conventional single-bit SDMs when better performance with moderate additional hardware complexity are required.
Proceedings ArticleDOI
Fully discrete-time neural recording front-ends: Feasibility and design considerations
TL;DR: This paper analytically examines the feasibility of a fully discrete-time neural front-end, and then goes over various design trade-offs that must be considered.
Book ChapterDOI
High-Order Sigma-Delta Modulators
TL;DR: It is demonstrated that modulators with noise-shaping order higher than two can be unstable for some or even all possible inputs, but careful architecture selection for single-loop modulators and the implementation of multi-bit quantization will be investigated to demonstrate how high-order modulators stability and stable input range can be increased.
Journal ArticleDOI
Implementation of Single-Phase Energy Measurement IC
TL;DR: In this paper, a single-phase energy measurement IC is presented, which includes two programmable gain amplifiers (PGAs), two ∑∆ modulators, a reference circuit, a low-dropout (LDO) regulator, a temperature sensor, a filter unit, a computation engine, a calibration control unit, registers, and an external interface block.
Journal ArticleDOI
Delta Sigma Modulator-Based Dividers for Accurate and Low Latency Stochastic Computing Systems
Xiaochen Tang,Shanshan Liu,Farzad Niknia,Ziheng Wang,Siting Liu,Pedro Reviriego,Fabrizio Lombardi +6 more
TL;DR: In this article , two Delta Sigma Modulator (DSM) based stochastic dividers are proposed to reduce the number of additional clock cycles needed for division, and also slightly increase the accuracy.
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.