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原理图如下，想获得一个0.11V的参考电压。运放5V供电，VDD是3.3V。
正相输入测得是正常的55mV左右的信号，反相输入信号如图2，输出信号如图3.
将C104去掉后正常。
请问是怎么回事呢？
