想设计一个10KHZ中心频率,增益为1V/V,阻带衰减速率>40dB的带通滤波器,我使用了WEBENCH和filterpro进行电路设计,但是实际按照图纸做出来的效果很差,用TINA仿真数据也跟参考设计完全不一样,目前还没找到原因,希望大家能帮我解决这个问题
实际电路搭建也用的OPA690,仿真文件:
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