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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
Sample-and-Hold
TL;DR: The chapter discusses first the specific metrics for these circuits, such as pedestal step, droop time, and hold-mode feedthrough, and the different elements, switch, capacitor, and buffer, are discussed.
Journal ArticleDOI
Noise-shaping SAR ADC using three capacitors
TL;DR: A simple and highly efficient successive-approximation registers (SAR) ADC realisation is proposed, well-suited for low-frequency instrumentation and measurement applications, and for use in extended-counting ADCs.
Journal ArticleDOI
A Delta–Sigma Modulator for Low-Power Analog Front Ends in Biomedical Instrumentation
TL;DR: A high-resolution dual-integrating delta-sigma modulator (DI-DSM) for low-power analog front-end (AFE) circuits in biomedical instrumentation and the use of a lower switching frequency at the critical blocks results in a significant reduction in the power consumption of both the preamplifier and the modulator.
Patent
System and Method for an Oversampled Data Converter
TL;DR: In this paper, the authors defined a comparison circuit having an input coupled to an output of the analog loop filter and an output coupled to a second input of the digital accumulator.
Proceedings ArticleDOI
Wavelength locking of a Si ring modulator using an integrated drop-port OMA monitoring circuit
Saurabh Agarwal,Mark Ingels,Michal Rakowski,Marianna Pantouvaki,Michiel Steyaert,Philippe Absil,Joris Van Campenhout +6 more
TL;DR: In this paper, the authors demonstrate wavelength locking of a hybrid C MOS-silicon photonics ring-based transmitter through direct monitoring of the optical modulation amplitude (OMA) at the drop port of the ring modulator.
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.