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MSPM0G1518: VR+ > VCC at ADC

Part Number: MSPM0G1518


Tool/software:

Hi TI,

we want to use MSPM0G1518 to do ADC measurements and DAC outputs.

The MCU is supplied by VDD.

The ADC/DAC is supplied by an external reference voltage VREF.

Due to DC/DC converter tolerances, there is a possibility that VREF > VDD, e.g VDD=3.2V and VREF=3.3V.

According to the datasheet, the analog input voltage should not exceed VDD. Also the reference voltage of the DAC supply should not exceed VDD.

What happens if the positive ADC reference voltage (VR+) is greater than VDD?

Regards