I did check the for theIP2 data for the HMC636 & HMC734. It appears that the data was not measured. The amp2 model was chose because GaAs devices are pretty consistent in the P1dB /IP2 offset.
The ADL5530 has an upper frequency limit of 1000MHz so it's not suitable for the application described above. Take a look at ADL5602, HMC475 or HMC636, which are internally matched gain blocks. Lots of options depending on what the system requirements…
I am currently looking at using the Hittite HMC636ST89 component and have done some thermal analysis at 85 degree C. Based on the simulation done it seems to show that the Channel Temperature of HMC636 on a bare PCB board exceeded the maximum channel…
The attached list details all of the ADI RF Amplifier Sys-Parameter models that are available in the 2015.08 release of Keysight Genesys. This library will be updated over time.