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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
Integrated High Resolution Digital Color Light Sensor in 130 nm CMOS Technology.
Drago Strle,Uroš Nahtigal,Graciele Batistell,Vincent Chi Zhang,Erwin Ofner,Andrea Fant,Johannes Sturm +6 more
TL;DR: A color light detection system integrated in 130 nm CMOS technology using on-chip integrated sensors without any additional process steps, high-resolution analog-to-digital converter, and dedicated DSP algorithm, currently implemented on FPGA.
Proceedings ArticleDOI
An Incremental Data Converter with an Oversampling Ratio of 3
TL;DR: It is shown that an incremental ADC can save half the analog power due to the removal of the input sample-and-hold and the reduced number of stages required for 12-bit operation.
Journal ArticleDOI
Prediction of the Average Value of State Variables for Modulated Power Converters Considering the Modulation and Measuring Method
Sebastian Rojas,Albrecht Gensior +1 more
TL;DR: A method is developed to predict, at every sampling instant, the average value of the system variables in a power converter, incorporating the modulation method and the type of analog-to-digital converter, either a conventional sample-and-hold or a sigma-delta converter.
Proceedings ArticleDOI
A 2nd-order Delta Sigma AD modulator using dynamic amplifier and dynamic SAR quantizer
TL;DR: The measurement results of an experimental prototype demonstrate the feasibility of the proposed switched-capacitor (SC) architecture to realize a 2nd-order Delta Sigma AD modulator with ring amplifier based integrators and dynamic comparator based successive approximation register (SAR) quantizer.
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.