用于分布式传感器应用的四阶单比特开关电容σ - δ调制器

IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276) Pub Date : 2002-08-07 DOI:10.1109/IMTC.2002.1006848

S. Brigati, F. Francesconi, P. Malcovati, F. Maloberti

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引用次数: 9

摘要

在本文中，我们提出了一种用于高分辨率应用的开关电容σ - δ调制器。特别是这种σ - δ调制器非常适合于分布式传感器网络。该电路采用双聚双金属0.6 /spl mu/m CMOS技术，基于4阶单回路架构，采样频率为256khz。该芯片从单个5 V电源消耗50 mW，在400 Hz的带宽上实现104.9 dB的信噪比，对应于17.1位的分辨率。

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A fourth-order single-bit switched-capacitor sigma-delta modulator for distributed sensor applications

In this paper we present a switched-capacitor sigma-delta modulator for high resolution applications. In particular this sigma-delta modulator is well suited for distributed sensor networks. The circuit, implemented in a double-poly, double-metal 0.6 /spl mu/m CMOS technology, is based on a 4th-order single-loop architecture with a sampling frequency of 256 kHz. The chip consumes 50 mW from a single 5 V supply and achieves a signal-to-noise ratio of 104.9 dB over a bandwidth of 400 Hz, corresponding to a resolution of 17.1 bits.

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IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)

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