DS90UB948-Q1: Maximum Repeater Application

Hi Toshi,

If you wish to achieve the full 15m between each node it will be critical for you to use best layout practices, high quality connectors, and well shielded cabling. The quality of the clock will also be essential to achieve good signal integrity.

I would recommend conducting tests with our EVMs in your desired connection configuration using various cables and lengths to see if it will meet your needs.

Regards,

Hi Michael,

Thank you very much for your help.

Well,  I guess it is very difficult to clear the spec of the input PCLK jitter, even if I use best quality cable , connector, ....

If my EVM test will be failed, I should use shorter cable or take measures to deal with the clock architecture ?  

Hi Toshi,

Unfortunately if you can't achieve the results you want with the EVMs it will be very difficult to do your own design that will achieve much better results.

Yes, I believe you should try to use shorter cable lengths and ensure a very clean clock.

Regards,