Article View: sci.electronics
Article #15466Clocks
From: John Kamchen
Date: Mon, 28 Dec 1992 04:23
Date: Mon, 28 Dec 1992 04:23
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1240 bytes
I'm having a problem with a circuit I'm trying to build. What I need is a 14Mhz clock that doesn't jitter the length of a video line. An LM1881 provides the syncs, and the clock should be stable as possible. Looks like this --____---------------------------------------------- _-____-_-_-_-_-_-_-_-_-_-_-_- and so on this is the 14Mhz clock I suppose what I'm trying to do is simulate a color-burst sync circuit (but using a 14Mhz clock). The goal is to enable me to address a pixel every 70ns (for video sampling, image manipulation & such). Anyone know what I can do ? I've tried Xtals & inverters, all I could think of. I did get this working using a 74HC4046 PLL chip, but the cost was high ($2.50 for the chip), and at the end of the video line, the clock wasn't too stable. So, that's what I need. Need help! -John SSE BBS (204)589-1078 v32bis AmiTronics- MEGS of 'em
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Path: arc1-ca.pugleaf.net!sparky!uunet!newsflash.concordia.ca!mizar.cc.umanitoba.ca!bison!sys6626!flux From: flux@sys6626.bison.mb.ca (John Kamchen) Newsgroups: sci.electronics Subject: Clocks Message-ID: <e26gwB4w165w@sys6626.bison.mb.ca> Date: Sun, 27 Dec 92 22:23:13 CST Organization: System 6626 BBS, Winnipeg Manitoba Canada Lines: 20