What is the equivalent model when enable both mix mode and 2x interpolation?
Based on the block diagram, the 2x interpolation will upsample the data by 2. Then the mix mode operation will simply change the sign of every other sample? Therefore, it's equivalent to modulate the signal to fDAC/2. If so, what's the difference between the following two modes:
1. enable both mix mode and 2x interpolation
2. enable mix mode only.
In the mix mode evaluation board, which one of the above two modes is the DAC operating at?