Need information regarding MCU

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Need information regarding MCU

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pratayay123
Contributor III

what is the operating voltage of the input ADC pin ..0-3.3 volt or 0-5 volt?

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PetrS
NXP TechSupport
NXP TechSupport

Hi,

you did not specify the MCU, lets assume S32K144.
ADC input should be between VREFL and VREFH. Recommended condition is to have VDD=VDDA=VREFH. Anyway VDDA and VDD must be shorted on PCB, but VREFH can be connected to another source. And there is a restriction, VREFH should be equal or less than VDDA + 0.1V and VDD + 0.1V.

BR, Petr

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