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
More filters
Proceedings ArticleDOI
FPGA-Driven DAC with Second Order Sliding Mode Control of Filter Model for Hardware-In-the-Loop Simulators
TL;DR: A new bitstream DAC architecture based on the sliding mode control of the output analogue filter model is introduced, optimized mainly to reproduce current transducer signals in power electronics (usually triangle waves), which can be done more accurately than traditional $\Sigma-\Delta$ solutions.
Proceedings ArticleDOI
Design and Simulation of a High-Order Sigma-Delta Continuous-Time Modulator
Ricardo Iuzzolino,Marcos E. Bicrzychudck,Allan Belcher,Ronald Dekker,Jonas Herick,Jonathan M. Williams,Jane Ireland,Kars Schaapman +7 more
TL;DR: The design and simulation results show that the target specification can be achieved by configuring the oversampling ratio and the digital filter according to the measurement bandwidth.
Journal ArticleDOI
Interpolating by a factor of 3 in low-voltage low-power ΣΔ DAC
TL;DR: The power optimization of a sigma-delta (ΣΔ) modulator based digital-to-analog converter (DAC) for hearing aid audio back-end application is presented and the figure-of-merit of such designs can be lower than designs using oversampling by a factor of integer powers of two.
Proceedings ArticleDOI
Architecture-aware design of a decimation filter based on a dual wordlength multiply-accumulate unit
E. Lindahl,Oscar Gustafsson +1 more
TL;DR: This work presents the design and implementation of a decimation filter for an audio range DeltaSigma-modulator based on a dual wordlength multiply-accumulate (MAC) unit to handle the reduced wordlength of the input.
Journal ArticleDOI
An All-Digital Low-Noise Switching DC–DC Buck Converter Based on a Multi-sampling Frequency Delta-Sigma Modulation with Enhanced Light-Load Efficiency
TL;DR: This paper presents an all-digital technique to control DC–DC switching buck converters for noise-sensitive low-power applications that adopts a unity-gain signal-transfer function delta-sigma modulator that avoids excess phase in the control loop.
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.