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现在需要将多路单端音频信号经TPA3130放大,有杂音。

Other Parts Discussed in Thread: NE5532

大家好,我现在需要将多路单端音频信号经TPA3130放大至输出。

现在前级用运放NE5532叠加几路音频信号,运放输出再接入TPA3130.

这样接的话,会有杂音。不使用运放直接将几路音频信号串接电阻并在一起输入TPA3130,杂音还会小点。

这样的问题怎么处理呢? 是不是和地的处理有关?

谢谢。