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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
130 nm CMOS Fully Differential SC Filter for Ultra-Low Voltage ∑-Δ Converter
TL;DR: In this paper, a fully differential (FD) switched-capacitor (SC) integrator for ultra-low voltage Sigma-Delta analog to digital converter (∑-Δ ADC) is presented.
Energy-Efficient Capacitive-Sensor Interface Based on A Multi-Slope ADC
TL;DR: This thesis presents an energy-efficient capacitive sensor interface based on a multi-slope analog-to-digital converter (ADC) that utilizes precision resistor as reference components and the conversion time is reduced down to 50us.
Proceedings ArticleDOI
A 50-MHz SAR ADC-Based f S /4 Noise-Shaping Bandpass ADC
TL;DR: In this paper, a band-pass S-SAR ADC was proposed, which achieves SNR of 80.85 dB in a 0.78125 MHz bandwidth when the over-sampling rate (OSR) is 32.6 bits.
Journal ArticleDOI
Turbo Quantization of Oversampled Signals
TL;DR: A new iterative quantization procedure for oversampled frames with guaranteed convergence and stability is presented, which is shown to provide significant improvement over prior art in quantization and integer programming.
Proceedings ArticleDOI
High-Level Design of a 14-bit Continuous-Time Sigma-Delta Modulator with FIR DAC for Low-Voltage Audio Devices
TL;DR: The high-level design of a continuous-time third-order sigma-delta modulator with a FIR DAC for audio devices, using a supply voltage of 0.5 V is 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.