S32k3 bandgap-adc result not as expected

[sunghou-kim]

Hi NXP!

I am getting adc(bandgap, BD_ADCresult) result as "985" with 12 bits resolution setting in S32k312/5V power.

This result(BD_ADCresult) gives out VREF as 4158mV with the equation below.

It 's based on  an "AN13413" document. Is this the right result? or am I missing something?

N = 12 / BD_ADCresult = 985  => VREF = 4158mV(value too high, should be around 1000mV. right?)

Let me share other bit resolution settings and its adc results also.

N = 8, BD_ADCresult = 60

N = 10,  BD_ADCresult  = 245

N = 12, BD_ADCresult  = 985

N = 14, BD_ADCresult  = 3940

Any guidance to get a solution for this issue would be appreciated.

Thanks

[_Leo_]

Thank you so much for your interest in our products and for using our community.

Can you share your project, IDE versions, RTD and a small guide on how to reproduce your issue please?

Have a nice day!