ADC problem confirm of MPC5744P

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

ADC problem confirm of MPC5744P

512 Views
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

440 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

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

pastedImage_1.png

440 Views
nathan_
Contributor IV

Thank you very much.

0 Kudos