I am planned to use DAC8562.
But the output level confused me quietly.
When I provode 3.3V power for AVDD PIN ,and also the internal reference will be used.
According to EQUATION 1, the max output level = Vref * Gain .
when the gain= 2. the max output level = 2.5v * 2 = 5V.
But Chapter 188.8.131.52 tell us that "The output buffer amplifier is capable of generating rail-to-rail voltages on its output, giving a maximum output range of 0 V to AVDD."
That means thant my applicaton can only output max output level = AVDD= 3.3 V.
So, I need your help . Which rule should I obey when I power AVDD with 3.3V and internal reference is used meanwhile GAIN = 2.
Thank you in advance.