ADF5356 Transistors


I am carrying out some reliability analysis' on the ADF5356 and am having trouble finding information about the approximate number of transistor on-board, to a factor of 10. I realize this is generally proprietary information and is why I'm asking for just a rough number. 

I saw on the wafer fabrication page that the part is fabricated using a  0.18u SiGe BiCMOS process. This goes a long way in helping with the first bit, too. 

Thank you for any information you might have.