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ads1256用ADUM1402ARW隔离后读取数据失败或不稳定

Other Parts Discussed in Thread: ADS1256

ads1256用ADUM1402ARW隔离,单片机为STM32

调试程序四五天了,没有成功。

今上午,我去除ADUM1402ARW隔离芯片,直接连接STM32后,能够成功读取数据,这是为什么。该怎么办?

原理图如下: