I am trying to put the triangle wave into the DAC so I can adjust the amplitude.
When I do not connect my output of my buffer to Vref, I get my full wave. However, when I connect the buffer output to the Vref of the DAC, some of the upper portion of the waveform gets flattened as if it is getting clipped.
My signal is 14 V pk-pk centered at zero. In other words, it is 7V 0 to peak. It is still with in +/-10V, unless I am misunderstanding what +/-10V means (I read that as 20V pk-pk).