Re: sync signal generator

Article View: sci.electronics

Article #1165

#1165

From: Steve Ludtke
Date: Thu, 10 Aug 1989 05:29

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If you just need a simple sync signal, and you have some sort of video source,
the LM1881 is an excellent choice. It's pretty new; it provides composite
sync, vertical sync, burst/back porch, and odd/even frame output, all in a
8 pin package. It takes any NTSC (might deal with PAL too) video signal as
an input, and requires only 3 external components and a +5 thru +12 volt
power supply. I've tried it with a number of video sources for genlocks,
video decipering, etc ... and it's worked quite well. Even better, they
only cost $4-6 each. I've seen a number of different scemes for accomplishing
the same thing as this single chip. It usually involved several IC's and 
numerous resistors and cap's, and was usually less reliable than this. In
any case, it's made by national, and might be worth looking into.


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From: stevel@tybalt.caltech.edu (Steve Ludtke)
Newsgroups: sci.electronics,rec.video
Subject: Re: sync signal generator
Message-ID: <11525@cit-vax.Caltech.Edu>
Date: 10 Aug 89 05:29:24 GMT
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