In the datasheet page 23 @ ADF4150HV, it say following.
For best performance and to achieve maximum power transfer,
it is recommended that a differential connection be used.
In generally, what is the difference specific PLL performance between single-ended and differential connection from vco to RFin +/- ?
What is the point (superiority / inferiority) when choosing single ended input or differential input configuration with priority on PLL characteristic performance without considering physical condition (device)?
harmonics? noise? Output level? Other?
Can you give us a general comment on a simple comparison of both PLL configuration ?