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 Wide-Dynamic-Range Neural-Recording IC With Automatic-Gain-Controlled AFE and CT Dynamic-Zoom ΔΣ ADC for Saturation-Free Closed-Loop Neural Interfaces
Yoontae Jung,Soon-Jae Kweon,Hyuntak Jeon,Injun Choi,Jimin Koo,Mi Kyung Kim,Hyunjoo Lee,Sohmyung Ha,Minkyu Je +8 more
TL;DR: Measurements with pulsatile artifacts and experiments validate that the proposed IC is applicable to the closed-loop neural interface.
Integrated Circuit Blocks for High Performance Baseband and RF Analog-to-Digital Converters
TL;DR: The advantage of the reconfigurable ADC over customized ADCs is that its power consumption can be scaled at different specifications, enabling optimized power consumption over a wide range of sampling rates and resulting in a more power efficient design.
Proceedings ArticleDOI
A lower switching noise two-legs three-phase inverter applying new type modulation scheme
TL;DR: In this article, a lower switching noise control method for two-legs three-phase inverter has been proposed, which improves delta-sigma modulator and also removes input voltage fluctuation effect simultaneously.
Proceedings ArticleDOI
Gm-Free Assisted Opamp Technique for Continuous Time Delta-Sigma Modulators
TL;DR: Transistor level simulations for the first integrator in a continuous-time sigma-delta modulator are used to validate and compare the operation of the proposed technique with the original technique in a 180nm CMOS process.
Proceedings ArticleDOI
Performance enhancement of linear power amplifier employing digital technique
TL;DR: This paper introduces the digital techniques to enhance performances of wireless communication systems, including the RF transmitter architecture controlled by digital circuit such as a delta-sigma modulator, and the digital feedback pre-distortion technique, which linearizes the highly efficient saturated power amplifiers.
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.