DAC8552输出阻抗可以设置,这样有什么意义?
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从DAC8852的输出架构可以看出,输出是接的一个运放,这里通过设置PD0和PD1,选择运放是接1Kohm电阻还是接10K还是直接断路,高阻抗状态。
这样设置的意义从运放的角度来看,主要是衡量它的带载能力。