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Sampling LF to 2GHz signal

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monnoliv

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Hello,

I'm working in the LF-2GHz range (then wideband).
I've to sample the signal at a resolution of 1bit (then using a high speed comparator).
The problem is not the comparator itself, I can find a fast one. But after I've to latch the signal @ 4GS/s.
Since I can't find a fast latch, I've this idea: I split two times the analog signal (I need tree splitters), then with the resulting four signals I route each of them to 4 comparators but each route is track delayed (lengh of track on the PCB) in order to have a respectively 0, 250ps, 500ps and 750ps delay. Then the four signals enter to four comparators followed by four latch clocked @ 1GHz (I can find these).
Question: with your experience, do you think It's a good Idea? Or there is more simple solution?

Regards,
 

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