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
Peaking reduced STF design for CT ΣΔ modulators with selective pole compensation
TL;DR: This paper presents a method to design continuous-time ΣΔ modulator with reduced peaking of the signal transfer function (STF) and reduces the number of additional circuit elements needed for a flat STF frequency response.
Proceedings ArticleDOI
∑-Δ based force-feedback capacitive micro-machined sensors: Extending the input signal range
Ayman Ismail,Ayman Elsayed +1 more
TL;DR: A solution is proposed that allows extending the input signal range of ∑-Δ based capacitive sensors beyond the limit imposed by single-bit operation, and is applied to the design of a MEMS based accelerometer.
Proceedings ArticleDOI
Band-pass ΔΣ D/A converter to up-convert frequency using images for wireless repeater
TL;DR: In this paper, an over-sampling interpolator, image-selecting filter, and bandpass delta-sigma digital-to-analog converter (BPΔΣDAC) are proposed.
Journal ArticleDOI
A Low Distortion 3rd-Order Continuous-Time Delta-Sigma Modulator for a Worldwide Digital TV-Receiver
Koji Obata,Kazuo Matsukawa,Yosuke Mitani,Masao Takayama,Yusuke Tokunaga,Shiro Sakiyama,Shiro Dosho +6 more
TL;DR: This paper presents a low distortion 3rd-order continuous-time delta-sigma modulator for a worldwide digital TV-receiver whose peak SNDR is 69.8dB and SNR is 70.2dB under 1V power supply.
Book ChapterDOI
A Complex ΔΣ Modulator with an Improved STF
TL;DR: The presence of interferers puts a severe demand on the linearity requirements of the analog circuitry of a ΔΣ ADC and, in such applications, instead of unity signal-transfer functions (STF), it may be more desirable to have an STF with improved out-of-band attenuation.
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.