ADC外接電容：作用

原創 qq_888192 2019-05-06 16:53

ADC外接電容：作用就是存儲電荷的作用，當然也有濾波，和上面那個電阻組成低通濾波

ADC的採樣和轉化其實就是ADC內部電容的快速充放電，快速充放電的時候，這個電容可以快速給ADC補給電荷，否則ADC的採樣值會有振盪，因爲電阻分壓的響應速度很慢

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