I am using STM32L432KC Nucleo Board. My Vref is connected to 3.3V but I wish to limit my DAC output from 0 to 1 V. How I can achieve this?

[Reema O]

..

[waclawek.jan]

Using only output values corresponding to that voltage span... ?

JW

[Reema O]

Yes this will be my alternative but can I used Vref Buffer for 2.5V?

[Tesla DeLorean]

Pretty sure the delta between VDD and VREF is constrained. The Data Sheet would be instructive on this matter.

So truncate the values, or put an OPAMP on the output.

[Reema O]

Thanks definitely I will read datasheet for more details. Thanks to you and Jan Walclawek.

[RSonn]

If VDD - VREF is too constrained, use solution through hardware, a voltage divider. This will retain 12 bit resolution.​