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双TPA3118负芯片无法识别同步信号

ti的工程师您好:

                              使用双TPA3118做双声道,按公版原理图从主芯片的同步信号经10K与1000PF后同步信号被吃掉,负芯片无法识别同步,发热利害,1000PF电容去掉后正常。附电理图与测试图。

               寻求原因,谢谢!

TPA3118x2 PAGE1.pdf