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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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A synchronous generation and sampling system for electrical metrology applications
TL;DR: In this paper , an extension to two channels of a previously developed single-channel sampling system based on a Sigma-Delta analogue-to-digital converter (ADC) and a digital generator is described.
Proceedings ArticleDOI
Digital background calibration in continuous-time delta-sigma analog to digital converters
TL;DR: A digital calibration technique in continuous-time (CT) ΔΣ analog to digital (A/D) converters by measuring non-idealities in the outermost multi-bit feedback DAC and removing them in the background by a digital circuit.
Dissertation
Digital Sigma-Delta Modulator with High SNR (100dB+)
TL;DR: This dissertation is to create a Σ∆ converter for audio applications with pre-defined performance guidelines, especially the digital sampling of the digital data and the modulation of the input signal, before later being converted to analog.
Proceedings ArticleDOI
A Delta-Sigma ADC Design for a Wearable ECG Application
TL;DR: Several techniques, including chain of integrators with weighted feedforward structure, gain-enhanced current-mirror push-pull operational transconductance amplifier, and dynamic comparator with a set-reset latch are adopted to improve the signal-to-noise ratio (SNR) and reduce the power consumption.
A Mixed-Signal Feed-Forward Neural Network Architecture Using A High-Resolution Multiplying D/A Conversion Method
TL;DR: A mixed-signal neural network architecture is proposed employs a high resolution Multiplying Digital to Analog Converter (MDAC) designed using Delta Sigma Modulation (DSM) to reduce chip are and multiplexing is used in addition to analog implementation of arithmetic operations.
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.