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DAC80501: 基准电压与标称值不符,并且spi无法通信

Part Number: DAC80501
Other Parts Discussed in Thread: ADS1220

尊敬的先生,您好:

        我们现在使用DAC80501,,现在出现了一下问题。

        1、默认状态下,80501的vrefio管脚是2.39V,

        2、SPI通信不能对其进行操作。输出无任何变化。