ADC problem confirm of MPC5744P

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ADC problem confirm of MPC5744P

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nathan_
Contributor IV

I am using MPC5744P.

The volt to the VDD_HV_ADRE0 and VDD_HV_ADRE1 are both 2.5V.

And there is always a little difference between the result of the AD and the volt to the AD pin which is measured by the oscilloscope.

So what is the problem? Is the reference volt to the AD must be either 5.0V or 3.3V? the 2.5V will cause the problem?

2 Replies

56 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

Definitely, 2.5 voltage reference is not allowed, you cannot expect valid results.

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nathan_
Contributor IV

Thank you very much.

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