Hi Dmytro,
I apologize, but I'm having trouble reading the schematic because of its low resolution.
> I need to control the divider OUT1 of AD9513 by means MCU,
> is it possible realize by means ADG704, as shown in the scheme?
Do you mean change the divide ratio? It appears that you're connecting S7 and S8 for the ADG parts. What you're doing is possible, although the AD9513 isn't intended to change the divider on the fly. That said, you should be able to change the divider by momentarily grounding the SYNCB pin, although I'm not 100% positive. However, it shouldn't be hard to verify this if your board is built.
> how best to implement can be controlled by using fewer components (to save pcb space)?
Try grounding the SYNCb pin and let me know.
-Paul Kern