MSPM0G3507: About VTRIM formula

Tao_2199

Genius 5770 points

Part Number: MSPM0G3507

Hello,

Regarding to the VTRIM formula on MSPM0G3507, my customer is asking a question.

･VTRIM = (VREF(3.3V) / 4096) ∗ (ADCCODE - 0.5)

What does mean “0.5”? Why subtract 0.5?

I referred below thread but couldn’t make it clear.

Regards,

Tao2199

0 Zoey Wei over 1 year ago

This is due to the way the ADC is quantized.

For detailed, please refer to the below figures:

B.R.

Zoey

Arm-based microcontrollers forum