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求一高通滤波器的设计

Other Parts Discussed in Thread: OPA656

截止频率200KHZ,带内增益为10dB,这些都好说,最主要要求带外20KHZ出的衰减小于-40dB,本来打算用TI的滤波器设计软件直接出设计,可是并不可以