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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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Proceedings ArticleDOI
Design and modeling of a continuous-time delta-sigma modulator for biopotential signal acquisition: Simulink vs. Verilog-AMS perspective
TL;DR: In this paper, in order to investigate the options for fast and accurate simulations, two popular modeling tools and languages (Simulink and Verilog-AMS) capable of constructing behavioral models are evaluated.
Dissertation
Automated synthesis of mixed-technology MEMS systems withelectronic control
TL;DR: This research investigates and develops techniques for automated high-level performance optimisation and synthesis of mixed-technology MEMS systems and language extension has been proposed to efficiently support general partial differential equations(PDEs) modelling.
Proceedings ArticleDOI
Built-in Filtering for Out-of-Channel Interferers in Continuous-Time Quadrature Bandpass Delta Sigma Modulators
TL;DR: This paper presents the design of implicit filtering for out-of-channel interferers in continuous-time (CT) quadrature bandpass (QBP) ΔΣ modulator using a differentiated signal-transfer-function (STF) to better cope with the best implementation.
Proceedings ArticleDOI
Single-bit-output all-digital frequency synthesis using multi-step look-ahead bandpass Σ-Δ modulator-like quantization processing
TL;DR: It is shown that stable high-order noise shaping is possible even when using noise transfer functions that are unstable in a conventional Σ-Δ modulator loop, and multipliers can be avoided if the noise transfer function coefficients are chosen appropriately, leading to a low complexity hardware implementation.
Journal ArticleDOI
0.3–4.3 GHz Frequency-Accurate Fractional- $N$ Frequency Synthesizer With Integrated VCO and Nested Mixed-Radix Digital $\Delta$ - $\Sigma$ Modulator-Based Divider Controller
Michael Peter Kennedy,Hongjia Mo,Brian Fitzgibbon,Austin Harney,Hyman Shanan,Michael F. Keaveney +5 more
TL;DR: The programmable modulus solves the accuracy problem, while the large power-of-two modulus minimizes the spur content and measured results for an 0.18 μm SiGe BiCMOS prototype are presented.
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.