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TPA3113D2功放输出失真大

Other Parts Discussed in Thread: TPA3113D2

请教一个关于功放IC :TPA3113D2的问题,目前调试测试的现象是小声音的时候不会破音,稍微大些就破音明显,TPA3113D2的输入增益设置为10,示波器测量输入级波形比较好(正弦波),输出波形小声音时接近正弦波,加大了基本像方波了,有没有有经验的高手指导下怎么解决,是调整增益还是其他的?谢谢