ABB輸出控制器模塊ao801運放的差分輸出結(jié)構(gòu)因具有的抗干擾性而廣泛存在，但是后級MCU的ADC一般為單端輸入，所以常規(guī)做法是在靠近MCU內(nèi)置ADC輸入的位置，加上一個單端轉(zhuǎn)差分的運放。那么經(jīng)常會產(chǎn)生疑問，能不能不額外加這個運放，直接將隔離運放的差分輸出的一個腳接地，另一個腳接入MCU的內(nèi)置ADC呢？如果這樣做，會帶來什么問題呢？

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