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AIC26 Dout 输出电压只有0.5v 是怎么回事?



我焊接了几块,有一块工作了2周就没输出了,示波器仔细看,有0.5v的 电压幅度;还有一块焊上去就是这样了,还有一块到现在还正常。这是怎么回事啊?