The composition of the developed virtual instrument system of processing a random vibration signal is introduced. The action and demand of the anti alias filter in the system are recounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the anti alias filter is developed based on it. Specifically, the“ resonance”phenomenon is analyzed theoretically and the analysis is proved by the experiment. The“ resonance”is avoided. The anti alias filter has the performance of the circuit being simple, the change of the pass band convenient, and the attenuation of the transition band sharp

DevelopmentoffilterbasedonMAX293.pdf

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