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怎样仅用+5V单电源供电的情况下给VCA824，VCA821,VCA821供电，进行正常工作。
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。
