Please provide an example of use of the AD9122 Aux DACs to correct DAC output offset errors.
The AUX DACs are not primarly meant to correct DAC output offset but to help correcting the LO leakage when a dual DAC is used with a quadrature modulator. This LO leakage is caused by analog offset in the inputs of the quadrature modulator which can come from both the DAC and modulator.
A detailed description of how to use the Aux DACs can be found on page 54 of the AD9122 datasheet and a schematic of implementation is also shown on figure 73 , page 51 of the AD9788 datasheet.
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