Open AccessBook
Understanding Delta-Sigma Data Converters
Reads0
Chats0
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
More filters
Journal ArticleDOI
Modeling of integrator leakage in a continuous time ΔΣ-modulator using Matlab
Dirk Killat,Horst Schleifer +1 more
TL;DR: A Matlab model describing the charge errors on the first integration capacitor was developed to model the integrator leakage and to estimate the width of the dead zone for small input signals.
Proceedings ArticleDOI
A novel speculative pseudo-parallel ΔΣ modulator
J. R. Johansson,Lars Svensson +1 more
TL;DR: A novel speculative pseudo-Parallel ΔΣ modulator structure is presented, which almost halves the logic depth of the critical path in the pseudo-parallel Hatami structure, and circumvent the block-to-block dependence of theHatami structure.
Proceedings ArticleDOI
Low cost automatic test vector generation for structural analog testing
TL;DR: This work presents a low cost automatic method to test vector generation for defect-oriented structural analog testing by computing the frequency response of circuit nodes, while iteratively injecting faults, using a SPICE simulator.
Proceedings ArticleDOI
Direct charge handling method for dead-time-less photon counting
TL;DR: In this article, a direct charge handling method was proposed to build photon counting system with energy information for x-ray imaging, which operates the charge from xray detector and converts it to encoded digital bit pattern directly without dead time of front end circuit.
Proceedings ArticleDOI
Reconfigurable Multi-Mode Sigma Delta Modulator for 5G Applications
TL;DR: In this paper, a system level design of a reconfigurable multi-mode continuous-time low-pass sigma delta modulator for 5G applications is presented, which can support multiple channel bandwidths in the 5G standard which are 80, 40, 20, and 10 MHz.
References
More filters
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.