ADC wrong reading MPC5748G

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ADC wrong reading MPC5748G

648 次查看
medhedibasly
Contributor III

I get wrong reading of voltage from the ADC, for exemple the voltage on the adc pin is 0.720v and the the adc is getting 1.020v

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493 次查看
davidtosenovjan
NXP TechSupport
NXP TechSupport

Hi, do you have chosen reference voltage you expect (3.3V/5V) ?

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492 次查看
medhedibasly
Contributor III

Thank you for your reply, the issue was related to a hardware implementation on my board, the voltage divider was influenced by the some command signal related to  a transistor that changed the voltage divider gain value used on software.
i corrected the schematic and the problem disappeared.