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PCM3500E的DAC输出噪声过大的问题



你好!最近在调试PCM3500E,发现其DAC部分,输出噪声纹波峰峰值居然高达600mV,将芯片power down之后噪声就消除了。附图是DIN输入全零时,纹波的波形特征。