CC2541 在采用220V交流转5V直流供电，就是采用5V 1A充电器适配器供电的时候,ADC容易出现异常，重新上电能恢复正常，再用适配器供电的时候，偶尔P00 P07 ADC 的芯片IO口工作不稳定，是不是交流转直流供电方式对芯片有干扰，还是说充电的器的接地不稳定，还是纹波，USB 充电器5V 经过300MA 3V LDO稳压芯片给2541供电的，
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