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ADs7881，数据手册上说参考电压Vref=2.5V是指参考电压只能设置成2.5V吗？如果输入的模拟信号电压范围在0~5V把参考电压Vref设置成5V可以吗
串口不可以哦，4.7V可以的，是哪个芯片呀，谢谢！
