用launchpadG2553采集一个1.5v的电压，内部基准2.5v，单通道单次或者单通道循环采集，通过debug调试看ADC10MEM的值，每次都有变化，出现频率最高的也不是1.5v，而是1.48多（ADC10MEM*2.5/1023），并且最大与最少之间差了30mv，怎么会出现这种情况呢？？？？？？希望有人能指导一下，谢谢了!!!!!!
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