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28054的ADCINB4 (op-amp)



在用此通道采集信号时,发现常温和高温时没有问题,低温时数字量缺到某一个值不再变化,请问这是什么原因啊,程序已经验证,没有问题,采样电路也已经验证,没有问题,貌似只和AD转换有关了。