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Question asked by hpkamen on May 19, 2017
Latest reply on May 31, 2017 by LouijieC

Dear Sir/Madam,


 I use the FR4 substrate to do the 1.6mm double-layer PCB board, clock input using balun single-ended input, differential output way, and found that SYS_CLK pin does not have frequency output above 1.2GHz. I wonder whether or not this problem is caused by not considering 50 oh matching.

The second question is that I now want to use the reference circuit clock buffer. According the referecne circuit, there is a  100 OHM DIFF PAIR, what is the meaning. Does that mean input should match 100 ohm differential input,  and using microstrip line design?