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请问DAC8814的VREF推荐连接到电源还是电压基准源,每个VREF通道的汲取电流大概是多少?
您好,
都可以,建议使用稳定的精度高的电源或基准源作为DAC的参考电压。
参考电压管脚输入阻抗典型值是5KΩ,可以通过外接电压除以输入阻抗估算每个VREF通道的汲取电流: