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整机50ua一下元件选型



现在需要做个9V/600mah电池能供电2年的表头,当MCU进入掉电模式后,要求整机电流在50ua以下,现在需要元件是一个双运放,一个16bitAD,一个基准和一个9V降3.3V的三端稳压,MCU用430,为满足50ua以下的工作电流,求其他元件的选型。谢谢!