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在使用DAC1282过程中，VREF=+2.5V， AVSS=-2.5V，AVDD=+2.5V，在sine模式下，设置寄存器0x0与0x1之分别为0x40和0x0；输出正弦波峰峰值为2.5V。
请问这个对吗？按照说明书上说峰峰值应该是5V才对，有谁知道这是为什么
是差动峰峰值，A-B得到的。
