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DAC80501: VREFIO引脚输出2.38V

Part Number: DAC80501
Other Parts Discussed in Thread: DAC60508,

器件是DAC80501MDQFR,电源3.3V,上电后不进行任何配置,VREFIO引脚输出2.38V,为什么不是2.5V?更换电源到5V也是一样,换了几个芯片VREFIO都是2.38V。