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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
Citations
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Book ChapterDOI
Sigma-Delta ADCs with Improved Interferer Robustness
TL;DR: In this contribution, the state-of-the-art of Sigma-Delta ADCs is reviewed with respect to interferer robustness from system level on.
Journal ArticleDOI
An FPGA-Oriented FFT Algorithm for Sigma-Delta Signals
TL;DR: Two methods for parallel evaluation of the discrete Fourier transform (DFT) of Σ Δ signals are presented, targeting frequency domain analysis of oversampled signals, allowing highly parallel implementations with linear increase in performance as new processing units are added.
Journal ArticleDOI
ΔΣ digital-RF transmitter with reduced LO leakage using segmented butterfly shufflers
TL;DR: This is a digital-RF transmitter using multi-bit ΔΣ modulators with noise-shaped segmentation and butterfly shufflers for shaping mismatches between digital-to-RF converter (DRFC) cells to prevent mismatch errors of DRFCs from aggravating the linearity and the LO leakage of the transmitter.
Optimal design of Δ∑ modulators via generalized KYP lemma
M. Nagahara,Y. Yamamoto +1 more
TL;DR: In this paper, a new design method of Δ∑ modulators was proposed to shape the frequency response of the noise transfer function (NTF), and the generalized Kalman-Yakubovic-Popov (KYP) lemma was used to reduce the optimization to a linear matrix inequality.
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.