“线程”中讨论的其它部件: OPA1678
TI 专家您好: 
现在我使用汽车仪表的运算放大器 RC4558来实现2项功能: 
1.将汽车扬声器的差分信号转换为单端信号: 

2.通过电压随动电路过滤 MIC 信号

请帮助查看这2条电路是否有任何问题。 
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