Indeed. The ADCMP573 and ADCMP553 are already on my digikey order list. :) Complete with nice pecl output that I can connect to the LVPECL input of the spartan-6.
Thanks for the tip though, always good to know I'm not the only one who thinks of using it. let's call it confirmation. Thanks! :) regards, Fred PS: If you want to spend a lot of money on a high speed comparator, check out the 25706CP. http://www.inphi.com/products-technology/multi-markets-test-measurement-military-aerospace/latched-comparators/25706cp.php Awesome 25 GHZ low jitter specs can be yours ... for only $800. *cough* So yeah, I'll stick with the ADI parts for now. --- On Mon, 1/10/11, Geraldo Lino de Campos <[email protected]> wrote: > From: Geraldo Lino de Campos <[email protected]> > Subject: Re: [time-nuts] No State Of The Art Counter > To: [email protected] > Date: Monday, January 10, 2011, 2:26 AM > Take a look in Analog Devices > ADCMP572/573. Very fast comparators, > easy to add DC offset and hysteresis. > > >How will the input side work? How will you handle input > signals of > >various kinds? In particular sine of various amplitudes > and frequencies. > >Slew-rate can be a limiting factor as white noise will > convert into > >jitter if hitting a straight comparator. Choice of > trigger point can be > >done to achieve lowest jitter, so just AC-blocking and > trigger on the 0V > >may not be the best solution if shape is not well > known. Noise of input > >stage comes into play. > > > > -- > ------------------------------------ > Geraldo Lino de Campos > [email protected] > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
