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VCA824,VCA821的最小供电电压为7V,所以5V单电源供电是不允许的。
另外,如果电压范围合理的话,想单电源供电,如果您的信号直接满足单电源供电输入电压范围,就没问题,如果有负压信号,那么可以建立合理的偏置保证其输入在其共模电压范围之内即可。