In digital IQ modulation based systems, the High speed DACs are connected directly to mixers by skipping IQ modulators.
In this case can we use same circuitry (which are used in connecting DACs to Modulators) to connect DACs to Mixers (Passive reconstruction filter circuit) or should we add any additional circuitry. Will the DAC seamlessly connect to the Mixer or should we do any power conversion with VGA or step attenuators.
The DAC used - AD9746
Mixer - ADL5801.
(DAC o/p frequency - 30 MHz)
Thanks in advance