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ADS1230数据采集无变化

Other Parts Discussed in Thread: ADS1230

各位好,

     目前我正使用STM8去读取ADS1230芯片的数据,ADS1230使用内部晶振,CLKIN引脚接地,观察DOUT引脚数据输出波形如下:

传感器的差分电压输入到ADS1230的电压引脚,当输入电压已经变化时,数据输出波形没有变化,这是怎么回事呢,求解答