带13位a /D转换器的50 - 10年范围集成电阻式气体传感器接口的设计与表征

IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI:10.1109/ICSENS.2005.1597738

P. Malcovati, M. Grassi, F. Borghetti, V. Ferragina, A. Baschirotto

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引用次数: 5

摘要

本文介绍了一种电阻式传感器集成宽量程接口的设计与测试。ASIC由一个多尺度跨电阻连续时间放大器(通过从阵列中选择一个反馈电阻进行编程)和一个13位增量a /D转换器组成。校准后，用于消除刻度之间的偏移和增益误差不匹配，该设备在超过50年的范围内显示出约0.1%的电阻值测量最坏情况误差[100 ω - 20momω]

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Design and characterization of a 5-decade range integrated resistive gas sensor interface with 13-bit A/D converter

In this paper we present the design and testing of an integrated wide-range interface for resistive sensors. The ASIC consists of a multi-scale trans-resistance continuous time amplifier (programmed by selecting a feedback resistor from an array), followed by a 13-bit incremental A/D converter. After calibration, employed to cancel offset and gain error mismatch between scales, the device shows a worst case error in the resistance value measurement of about 0.1% over a range of more than 5 decades [100Omega-20MOmega]

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IEEE Sensors, 2005.

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