Open AccessBook
Understanding Delta-Sigma Data Converters
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 Compact System for Single Ion Channel Recording
TL;DR: This paper presents a compact and low-cost integrated system able to record and process signals in the typical single-channel recording bandwidths based on a DeltaSigma converter implemented on a PCB using discrete components technology to readout ion currents.
Proceedings ArticleDOI
Design considerations for power efficient continuous-time delta-sigma converters
TL;DR: This paper examines various design alternatives for the design of power efficient single-loop continuous-time delta sigma converters.
Proceedings ArticleDOI
Turbo quantization of frames
TL;DR: An iterative algorithm for quantizing overcomplete frames that achieves more than 18 dB/Octave improvement in the reconstruction error due to quantization.
Proceedings ArticleDOI
Dynamic calibration of feedback DAC non-linearity for a 4 th order CT sigma delta for digital hearing aids
TL;DR: This scheme was implemented in a 0.25um CMOS process with a supply voltage of 1.2V, and the 4th order CT-ΣΔ was able to achieve 68dB measured SNR, while the 2nd order harmonic was reduced by about 20dB suppressing it to the thermal noise floor.
Proceedings ArticleDOI
A sigma-delta bandpass ADC modelling in superconducting RSFQ technology with VHDL-AMS
TL;DR: This paper gives relations between ADC performance (SNR) to the comparator SFQ pulses form and duration with normalized physical parameters and assimilates ADCpsilas comparator which is composed by two Josehpson junctions to an ideal rectangular pulses generator.
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.