MSP430G2553,AD10功能用的电源电压3.3V，板子上有个2.4V的电池，然后怎么设计单片机电源电路，推荐的IC有么？之前试过电荷泵ic，AD转换结果不理想，有偏差还不稳定，后去掉电荷泵，接到外部稳压电源3.3v，ad转换结果较准确，不知设计用啥电源好，谢谢！
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