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新人求助！！！！电路很简单，就是一个同相比例放大，放大20倍，总是削底了，调频率和幅度也没什么变化，想问问大神们原因！！！急急急
亲；你的电源电压多少？贴图看看。
请检查输入共模电压范围和输出电压范围。
设置个VCC/2的虚地，估计就好了
