如题所示,输入电压+12V,做后要得到+-5V的稳压电源,要求纹波输出尽可能小,因为这里运放的输入信号也是特别小的信号,
主要的思路是先是DC-DC,再用LDO,这里的芯片如何选型,希望各位大神赐教!
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