If I try to make a sine wave from my DAC channel, it seems like the top par of the sine wave gets cut off. I'm using 12 bit resolution and I don't go over the maximum(4095).

[MSpir.2]

..

[TDK]

The output of the DAC with the output buffer enabled is not rail to rail.

 

How is the pin connected?

Including your chip number in your post will lead to more useful answers.

[MasterT]

Is it nucleo? There is a led to blame. Change for another dac or desolder jumper

[S.Ma]

The less specific, the less useful the answers.