A 17 bit oversampling D-A conversion technology using multistage noise shaping

Matsuya, Yasuyuki; Uchimura, K.; Iwata, Atsushi; Kaneko, Tetsuya

doi:10.1109/4.34079

Cited by 63 publications

(8 citation statements)

References 13 publications

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“…The MASH system [6] splits a noise-shaping process in multiple low-order stable loops; the result is satisfactory, but may be achieved in a simpler way by the method we describe here.…”

Section: Introductionmentioning

confidence: 93%

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A Noise-Shaping Theorem

Deraedt

1996

Applied and Computational Harmonic Analysis

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Noise shaping is a process which aims to remove as much quantization noise as possible from the spectrum of a given bandlimited signal when quantizing it (recall that the spectrum of a signal is the support of its Fourier transform). We provide a mathematical analysis of such a process, using methods of harmonic analysis on the unit disc. We are especially interested in conditions under which an analytic (but not necessary polynomial) function may be used as a transfer function of the process. Stability conditions will be given under terms of metric characteristics of the transfer function (stability means that the quantizer is never overloaded). Several kinds of quantizer transfer functions will be considered, especially midtread and midriser ones. We shall restrict our analysis to the case of deterministic (i.e., not random) signals. Some knowledge of Fourier analysis and signal processing will be presupposed.

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“…The MASH system [6] splits a noise-shaping process in multiple low-order stable loops; the result is satisfactory, but may be achieved in a simpler way by the method we describe here.…”

Section: Introductionmentioning

confidence: 93%

“…Many papers have been published on this subject; the most relevant are appended at the end of this report; [5] and [6] consider practical realizations, whereas [1][2][3][4] and [7][8][9] are more theoretical. But these papers most often describe particular realizations and are written from an engineers point of view.…”

Section: Introductionmentioning

confidence: 99%

A Noise-Shaping Theorem

Deraedt

1996

Applied and Computational Harmonic Analysis

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“…Consequently, the immunity of the LNFL technique to instability is necessarily superior to the conventional techniques that are activated only when the output level of the integrator will nearly enter beyond the normal operating region, such as the multi-bit quantization technique [9], [10] and the internal linear feedback loop technique [11]- [14]. Because it is sometimes too late for these stabilization schemes after they examine the output level situation of the critical integrator.…”

Section: Conventional Techniques For Stabilizationmentioning

confidence: 99%

Oversampling Sigma-Delta Modulator Stabilized by Intensive Nonlinear Feedback Loop Technique

Chen

2006

2006 International Conference on Communications, Circuits and Systems

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Based on the former "Local Nonlinear Feedback Loop (LNFL)" technique for stabilization of oversampling Sigma-Delta Modulator (SDM), an improved technique called "Intensive Nonlinear Feedback Loop (INFL)" is proposed to further raise the stability. The INFL technique not only avoids the instability limitation of high-order SDM without SNR degradation like the former LNFL technique, but also suppresses the output swing range of the critical integrator more effectively than the former LNFL technique. The contribution significantly results from the stabilization scheme closer to the critical integrator. The proposed INFL technique can also be extended to apply to various configurations of SDMs, such as single-loop or multiple-loop structures, for robust-stability and low-power VLSI applications.

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“…The kT/C noise of switched-capacitor filters may be avoided by using a continuous-time output stage [3], as shown in Fig. 2.…”

Section: Introductionmentioning

confidence: 99%

A 113-dB SNR oversampling DAC with segmented noise-shaped scrambling

Adams

Nguyen²,

Sweetland³

1998

IEEE J. Solid-State Circuits

134

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A sigma-delta digital/analog converter implemented in 0.6-CMOS uses a 6-bit modulator together with a segmented noise-shaped scrambling scheme to achieve 113-dB A-weighted dynamic range over a 20-kHz bandwidth. A continuous-time output stage is used to achieve high signal-to-noise ratio in a 9.1-mm 2 die area. The output stage uses a dual return-to-zero circuit that eliminates errors caused by intersymbol interference.

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A 17 bit oversampling D-A conversion technology using multistage noise shaping

Cited by 63 publications

References 13 publications

A Noise-Shaping Theorem

A Noise-Shaping Theorem

Oversampling Sigma-Delta Modulator Stabilized by Intensive Nonlinear Feedback Loop Technique

A 113-dB SNR oversampling DAC with segmented noise-shaped scrambling

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