I need two ADF4350's in my design. One runs at a frequency of 2-2.45 GHz, and the other at a frequency of 2.4-2.735 GHz. When I use ADISimPll, the solution for the first frequency range specifies using RFOuta, while the second range is RFOutb. There is no mention of performance difference between the two outputs. So I'm wondering how it is that SimPll chooses which output?