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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
A Delta-Sigma Modulator with a Widely Programmable Center Frequency and 82-dB Peak SNDR
TL;DR: Novel methods for quantizing and implementing the digitally programmable modulator coefficients enable performance comparable to state-of-the-art discrete-time fixed- frequency modulators at any center frequency from DC to 0.31 fs in steps of 0.0052 fs.
Journal ArticleDOI
A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function.
TL;DR: This paper proposes a fifth-order ΣΔ closed-loop interface for a capacitive MEMS accelerometer, and a built-in self-test (BIST) unit is integrated on-chip for in situ self-testing of the loop distortion.
Proceedings ArticleDOI
A Programmable Bandgap Voltage Reference CMOS ASIC for Switching Power Converter Integrated Digital Controllers
G. Kennedy,Karl Rinne +1 more
TL;DR: In this paper, the authors describe the theoretical development, implementation and experimental results to date for a programmable bandgap voltage reference, which is programmable via a system on chip bus and it comprises a voltage reference that is digitally modulated by a first order delta sigma modulator and then smoothed by a passive RC filter.
Journal ArticleDOI
A Fully Dynamic Low-Power Wideband Time-Interleaved Noise-Shaping SAR ADC
TL;DR: This article proposes a fully dynamic, low-power, wideband, time-interleaved (TI), noise-shaping (NS) successive-approximation-register (SAR) analog-to-digital converter (ADC) based on the cascade of integrators with feedforward (CIFF) architecture.
Journal ArticleDOI
High-speed oversampling analog-to-digital converters
TL;DR: The first part of the paper looks at various architectures for discrete-time modulators and looks at their performance when attempting high speed operation and some recent advancements in time-interleaved oversampling converters.
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.