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DAC8771不能输出满量程

Other Parts Discussed in Thread: DAC8771

1)在DAC8771电流模式0-24MA输出的情况下 ,最大只能输出16MA,然后调节数据寄存器的值,计算得到的数值居然是负数

2)是否可以满量程输出

  • 您好,满量程范围为0~24mA, 最大电流指的流经负载的最大电流, 所以输出电流的大小和负载有关。
    datasheet中给出输出24mA满量程的测试条件是1Kohm负载:
    for a load current of 24 mA flowing through a load resistance of 1 KΩ, the generated voltage at the VPOS_IN pin will be around 27V.