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关于ADA4941-1芯片 DIS管脚问题

请教TI工程师:

       ADA4941-1芯片DIS管脚如何正确对外连接控制其使能状态和禁用状态

       我当前测试时发现,只有把DIS管脚悬空,才能使得ADA4941-1芯片正常工作,而人工置高电平(3V)或者低电平(0V)给DIS管脚后,ADA4941-1芯片工作就不正常,芯片手册上说,“DIS置低”使能状态,“DIS置高”禁用状态。好像有问题,请指教正确控制方法