How to make a low jitter square with a very pure sine?

[ZengLei]

I have a very pure 10MHZ sine wave~~~phase noise=130dbc@1khz

but i need 6 CHANNEL 10MHZ very low jitter clock~~~(SQUARE)

1: SINE WAVE--->High speed comparator(ex:LT1719)-->74AHC14--->SQUARE*6

2:SINE WAVE--->74AHC14--->SQUARE*6

SO My question is which way could get the less jitter square wave?is there any other way to get a very low jitter square wave from a very good sine wave?


thanks~

 

[Siniša]

Maybe **broken link removed** will help. Comparator will add 15ps of jitter acording to data sheet.

 

[FvM]

See this thread , particularly the suggested user manual with circuits and peformance data.

 

[bepobalote]

maybe it can help to take a look to the pages made by KO4BB:
http://www.ko4bb.com/index.php
http://www.ko4bb.com/~bruce/
in specific: http://www.ko4bb.com/Timing/ClockShaper.php

You can also search in the archives at time-nuts:
http://leapsecond.com/time-nuts.htm

If you are really interested in timekeeping and precise clocks, I strongly suggest to subscribe to the time-nuts list: it is REALLY interesting.

I hope those info will be able to help you.

 

[nschutten]

Please also look into the application of Schmitt triggers to see if this is helpful. The good thing about Schmitt triggers is that they exhibit hysteresis, which prevents "bangbang" at the cross over points. The only thing to be cautious about is that Schmitt triggers have less strict relation between sine voltage cross over and output voltage cross over because of this hysteresis.