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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
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Journal ArticleDOI
A 0.8 V, 2.6 mW, 88 dB Dual-Channel Audio Delta-Sigma D/A Converter With Headphone Driver
Kyehyung Lee,Qingdong Meng,T. Sugimoto,Koichi Hamashita,K. Takasuka,S. Takeuchi,Un-Ku Moon,Gabor C. Temes +7 more
TL;DR: It is the first sub-1 V audio DeltaSigma DAC with integrated on-chip headphone driver and the dual-channel operation in digital section was efficiently realized with a time-interleaved single-channel hardware and extra registers.
Journal ArticleDOI
A 15-MHz Bandwidth 1-0 MASH $\Sigma \Delta $ ADC With Nonlinear Memory Error Calibration Achieving 85-dBc SFDR
Seung-Chul Lee,Yun Chiu +1 more
TL;DR: A 1-0 MASH ΣΔ analog-to-digital converter (ADC) demonstrates a digital linearization technique for the first time treating integrator distortion with memory and capacitor mismatch errors and a two-tap sequential polynomial derived from an output-referred error analysis accurately models the non-ideality of a first-order modulator.
Journal ArticleDOI
All-Digital High Resolution D/A Conversion by Dyadic Digital Pulse Modulation
TL;DR: The novel Dyadic Digital Pulse Modulation technique for all-digital, low cost, high resolution, Nyquist-rate D/A conversion is proposed and the spectral characteristics of the new modulation can be significantly released to be suitable to inexpensive integration on silicon in analog interfaces for nanoscale integrated systems.
Journal ArticleDOI
Sub- $\mu{\rm m}$ SNS Josephson Junction Arrays for the Josephson Arbitrary Waveform Synthesizer
TL;DR: In this article, the experimental set-up of a Josephson arbitrary waveform synthesizer (JAWS) was further optimized to generate AC voltages with fundamental accuracy, using a second-order delta-sigma modulator.
Journal ArticleDOI
A 24.7 mW 65 nm CMOS SAR-Assisted CT $\Delta\Sigma $ Modulator With Second-Order Noise Coupling Achieving 45 MHz Bandwidth and 75.3 dB SNDR
TL;DR: A continuous-time (CT) sixth-order ΔΣ modulator, employing a 4 bit asynchronous successive-approximation-register (ASAR) quantizer, incorporates second-order noise coupling (NC) and excess-loop-delay compensation, all are tightly integrated into the switched-capacitor (SC) SAR digital-to-analog converter (DAC).
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.