一个1v 1mw数字音频/spl Delta//spl Sigma/调制器，动态范围为88db，采用本地开关自启动

Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044) Pub Date : 2000-05-21 DOI:10.1109/CICC.2000.852608

M. Dessouky, A. Kaiser

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引用次数: 19

摘要

介绍了一种标准CMOS 0.35-/spl mu/m工艺的1v, 1mw, 14位δ - σ调制器。为了实现轨间信号交换，采用了一种改进的对称自举开关。过采样比为100的单环三阶拓扑在信号带宽为25 kHz的情况下，动态范围为88 dB，峰值信噪比为87 dB，峰值信噪比为85 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 1 V 1 mW digital-audio /spl Delta//spl Sigma/ modulator with 88 dB dynamic range using local switch bootstrapping

A 1 V, 1 mW, 14 bit delta-sigma modulator in a standard CMOS 0.35-/spl mu/m technology is presented. A modified symmetrical bootstrapped switch is used in order to allow rail-to-rail signal switching. A single-loop third-order topology with an oversampling ratio of 100 achieves a dynamic range of 88 dB, a peak SNR of 87 dB and a peak SNDR of 85 dB in a signal bandwidth of 25 kHz.

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Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044)

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