MCU外接该DA芯片然后不带载的时候OUTA波形正弦是没有噪声的,但当带载的时候OUTA的正弦上的噪声干扰特别特别大,但OUTBCD的正弦却没有干扰,观察了一下PCB走线发现四个输出走线都是一样的,不知道为什么会造成这种情况
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