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28379d ADC参考电压

Other Parts Discussed in Thread: OPA350

参考LAUNCHXL-F28379D-R2.0原理图画的adc参考电压,VREFHIA作为ADCA和ADCC的参考电压,VREFHIB为ADCB和ADCD的参考电压。但测得VREFHIA=3.5V,VREFHIB=3.0V,请问这个3.5V会损坏AD吗?之前没有注意这个问题,我才用ADCA/B/C/D各一个通道进行四路同步转换的,但昨天发现ADC-C的采样值一直为20~30左右的值,其余三个通道正确,现在也不敢上电了,有什么解决方法吗?

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