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TI TLV320AIC3106在无输入情况下,底噪有多大?

Other Parts Discussed in Thread: TLV320AIC3106

最近在测试TLV320AIC3106时,发现在设置增益后有不同程度的底噪。

 

 

测量无增益情况下(PGA=0dB),外部无信号输入时,示波器的LRCLK与数据对应关系I2S主模式输出

(16位的模式,从图中至少可以看出后7-8位一直都有非0数据在变化)

是否可以认为这些都是噪声?