Hi DSB and Louijie,
Sorry to be late to respond, and thank you very much for your helps.
We had just started to study how do we get low jitter square wave clock output from the device and this filter was a starting point. In addition to the application note you attached, we became to know we should read another source such as AN-927 and better to understand phase truncation spur to assume how much jitter can be presumed.
Anyhow, appreciate your helps in this thread and I may add supplemental questions in another issue in near future.
Best Regards,