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1. 发明申请

WO2010003339A1 SENSOR INTERFACE DEVICES AND AMPLIFIERS 审中-公开
标题翻译：传感器接口设备和放大器
公开(公告)号：WO2010003339A1
公开(公告)日：2010-01-14
申请号：PCT/CN2009/072227
申请日：2009-06-11
申请人： THE CHINESE UNIVERSITY OF HONG KONG , PUN, Kong Pang , CHOY, Chiu Sing, Oliver
发明人： PUN, Kong Pang , CHOY, Chiu Sing, Oliver
IPC分类号： H03M3/00
CPC分类号： H03M3/34 , H03M3/458
摘要： Disclosed are a sensor interface device and an amplifier used in a sensor system. The sensor interface device in one implementation has a first chopper configured to shift input signals of the sensor system from a baseband frequency to a first frequency, an instrumentation amplifier configured to amplify the shifted signals, a bandpass Delta-Sigma modulator configured to digitize the amplified signals, and a second chopper configured to shift the digitized signals from the a first frequency back to the baseband frequency. The instrumentation amplifier removes the DC offset generated from the first chopper and therefore all sources of DC offset are eliminated in this interface device without bandwidth limitation.
摘要翻译：公开了一种用于传感器系统的传感器接口装置和放大器。一个实施例中的传感器接口装置具有第一斩波器，其被配置为将传感器系统的输入信号从基带频率移位到第一频率，被配置为放大移位信号的仪表放大器，被配置为将放大的信号，以及第二斩波器，被配置为将数字化信号从第一频率返回到基带频率。仪表放大器消除了从第一斩波器产生的直流偏移，因此在该接口器件中，所有的直流偏移源都被消除，而无需带宽限制。

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