Bridge-to-Frequency Converter for Smart Thermal Flow-Sensor

ESSCIRC '92: Eighteenth European Solid-State Circuits conference Pub Date : 1992-09-01 DOI:10.1109/ESSCIRC.1992.5468136

Gert J. A. van Dijk, J. H. Huijsing

引用次数: 6

Abstract

A fully integrated bridge-to-frequency converter is presented as signal-conditioning circuitry for a one-chip smart thermal flow sensor. The converter reads out four separate bridges by means of a multiplexer to realize high sensitivity and directional flow measurement over the full range of 360°. Multiplexer control and output signal are microprocessor compatible. The relative measurement cancels all linear errors. The centre frequency is 10kHz. The sensitivity is 1Hz/(¿V/V). A bridge-offset of 10mV/V is allowed. The linearity error is 0.1%. The supply voltage is 5V.

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智能热流量传感器的桥频转换器

提出了一种全集成的桥频转换器作为单芯片智能热流传感器的信号调理电路。转换器通过多路复用器读出四个独立的桥，实现360°全范围内的高灵敏度和定向流量测量。多路复用控制和输出信号是微处理器兼容的。相对测量消除了所有的线性误差。中心频率为10kHz。灵敏度为1Hz/(¿V/V)。允许的桥偏置为10mV/V。线性误差为0.1%。电源电压为5V。

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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来源期刊

ESSCIRC '92: Eighteenth European Solid-State Circuits conference

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