ADS125H02: ADS125H02电源异常

Part Number: ADS125H02

我给ADS125H02施加的电源是DVDD=3.3V,AVDD=5V,结果发现DVDD变成了4.1V。这是为什么呢?我断开DVDD供电,单独测量为3.3V,供电正常,但一加到ADS125H02上,就变成了4.1V。我把AVDD不加电的话,DVDD为3.3V,正常。