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关于ADS1211接入正负10V信号的讨论?



在使用Vbias偏置引脚时,基准输入为2.5V外部参考,此时Vbias电压=1.33*2.5V=3.25V,请问尊敬的专家,上图中的配置的工作原理是什么?AinP和AinN引脚实际电压为多少?如何计算?