推荐几个运放做微分电路和带通滤波器,±3.3V供电。
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滤波器设计的话,建议使用webench,根据截止频率等要求可以设计各种有源滤波器,并且也给出了推荐的运放型号。
http://www.ti.com/design-tools/overview.html