Y0\Y1\Y4引脚数据有漂移,
具体表现为:
1.常温下,基本都工作正常;-20℃,MCU经CD4051采集到的数据开始不准,用示波器抓到的数据显示,CD4051的输出开始出现异常。估计是低温下,CD4051的内阻发生漂移导致。
2.部分芯片,CD4051的输出信号,比输入信号高150mV,这个无法接受,也是不应该发生的。
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