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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Journal ArticleDOI
A Precision Capacitance-to-Digital Converter With 16.7-bit ENOB and 7.5-ppm/°C Thermal Drift
TL;DR: This paper presents a high-precision capacitance-to-digital converter for displacement measurement in advanced industrial applications, based on a charge-balancing third-order delta–sigma modulator, employing a precision external resistive reference and a quartz-oscillator-based time reference instead of a reference capacitor.
Journal ArticleDOI
Analysis and Design of Low-Power Continuous-Time Delta-Sigma Modulator Using Negative-R Assisted Integrator
TL;DR: A negative-R assisted integrator is proposed to mitigate the opamp’s requirements including dc gain, unity gain bandwidth, thermal and 1/ noise, and linearity, thus enabling a drastic power reduction.
Journal ArticleDOI
A 100 W 5.1-Channel Digital Class-D Audio Amplifier With Single-Chip Design
TL;DR: A dual-loop resonator is proposed to increase the stable input range of the DSM so that the low-distortion output power of the class-D amplifier can be increased and the supply bouncing can be reduced.
Journal ArticleDOI
A digital interface for gyroscopes controlling the primary and secondary mode using bandpass sigma–delta modulation
TL;DR: In this paper, a micro-electro-mechanical gyroscope system with extensive use of sigma-delta modulation in both, primary and secondary modes is implemented digitally on a field programmable gate array.
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A 280 $\mu$ W Dynamic Zoom ADC With 120 dB DR and 118 dB SNDR in 1 kHz BW
TL;DR: A dynamic zoom analog-to-digital converter for use in low-bandwidth (<1 kHz) instrumentation applications that employs a high-speed asynchronous successive approximation register (SAR) ADC that dynamically updates the references of a fully differential ADC.
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.