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请问四阶巴特沃斯低通滤波器的幅频响应在衰减的时候产生跳变这个正常吗?
对的,这个是我用multisim又做了一次仿真,芯片是LMV793,幅频图是这样的,WEBENCH上只是显示了一部分,这个是multisim上显示的,我调的范围比较宽:
这个是原仿真图,芯片是LMV793,四阶巴特沃斯低通滤波器,幅频图是: