HMC705 / HMC794 frequency divider

Question

Trying to figure out the min. input duty cycle the products will respond to. I have a very low duty cycle pulse train @ 100MHz that I need to divide down. Pulse width is on the order of 200fs. 
 Thanks, 
 Tim

MRichardson · Accepted Answer

Hi Tim, 
 I don't believe either of these parts will come anywhere close to working. I base this on the maximum input frequency that the divider can accept and the time that would be required to process a 200fS pulse. If we think of the 200fS pulse as being one half of signal train then we end up with a frequency of 2.5THz. I don't think it's going to matter that we only have to divide this signal once every 10nS. 
 Best Regards, 
 Marty