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HALL ELECTROMOTIVE FORCE SIGNAL DETECTION CIRCUIT HAVING A DIFFERENCE CALCULATION CIRCUIT AND CURRENT SENSOR THEREOF
HALL ELECTROMOTIVE FORCE SIGNAL DETECTION CIRCUIT HAVING A DIFFERENCE CALCULATION CIRCUIT AND CURRENT SENSOR THEREOF
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机译:霍尔电动势信号检测电路具有差分计算电路及其电流传感器
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摘要
The present invention relates to a hall electromotive force signal detection circuit and a current sensor thereof each of which is able to achieve excellent wide-band characteristics and fast response as well as high accuracy. A difference calculation circuit samples a component synchronous with a chopper clock generated by a chopper clock generation circuit, out of an output voltage signal of a signal amplifier circuit, at a timing obtained from the chopper clock, so as to detect the component. An integrating circuit integrates an output from the difference calculation circuit in the time domain. An output voltage signal from the integrating circuit is fed back to a signal amplifier circuit via a third transconductance element.
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