The action and demand of the anti alias filter in the system arerecounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the antialias filter is developed based on it.

• 叙述了其中的抗混滤波器的作用与要求,并在分析8阶低通椭圆开关电容滤波器(MAX293)性能的基础上,研制了基于MAX293的抗混滤波器。