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
Sparse Representation of Feedback Filters in Delta-Sigma Modulators
Masaaki Nagahara,Yutaka Yamamoto +1 more
TL;DR: Sparse representation of FIR (Finite Impulse Response) feedback filters in delta-sigma modulators has a sparse structure, that is, only a few coefficients are non-zero, that stabilizes the feedback modulator, and minimizes the maximum magnitude of the noise transfer function at low frequencies.
Proceedings ArticleDOI
Digital Background Calibration for Binary DACs in Continuous Time Delta Sigma Modulators
TL;DR: This study aimed to find the error associated with each binary DAC element using the correlation technique between a random signal and a modulator output and demonstrated that this method can estimate the error value of each element with high precision and raise the modulator accuracy up to an ideal value, independent of the OSR value.
Proceedings ArticleDOI
RF MEMS reference oscillator platform with ±0.5ppm frequency stability for wireless handsets
TL;DR: In this article, a complete RF MEMS reference oscillator platform was designed with SiO 2 layers for passive temperature compensation achieving frequency stability of 105 ppm across temperature ranges of −40°C to 85°C.
Proceedings ArticleDOI
Compact, Multi-Channel, Electronic Interface for PNS Recording and Stimulation
TL;DR: A multi-channel system for neural signal recording/stimulation is presented, which guarantees a robust communication link while minimizing the blocks to be implanted, saving power and area.
Journal ArticleDOI
A novel design of hybrid-time-interleaved current steering digital to analog converter and its behavioral simulation considering non-ideal effects
TL;DR: A new type of poly-phase decomposition is presented that keeps the critical path for each number of channels constant and minimizes the number of full-adders in the TI delta-sigma modulator (DSM).
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.