phase/frequency detector

Hello, all. I am thinking of using Analog devices AD9901 phase frequency detector for a multiloop PLL design. This device shall be used in the coarse loop, stepping in 60MHz steps. I would appreciate if someone out there could share with me the following:

[1] What is the residual phase noise of AD9901, say at a comparision frequency of 60MHz.

Regards

lguancho