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分析了开关电容滤波器的“共振”现象及其产生机理。针对该现象提出了解决办法,并结合信号处理仪器系统给出了采用MAX293制作抗混滤波器的方案。
The phenomenon of “resonance” of switched capacitor filter and its generation mechanism are analyzed. In view of this phenomenon, a solution is proposed, and the scheme of using the MAX293 to make the anti-aliasing filter is given in combination with the signal processing instrument system.