Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!jarthur!nntp-server.caltech.edu!jkubicky
From: jkubicky@nntp-server.caltech.edu (Joseph J. Kubicky)
Newsgroups: sci.electronics
Subject: Re: fast A/D for video
Message-ID: <1991Apr26.110358.13629@nntp-server.caltech.edu>
Date: 26 Apr 91 11:03:58 GMT
References: <1991Apr22.100053.1486@cs.ruu.nl> <5170129@hplsla.HP.COM>
Organization: California Institute of Technology, Pasadena
Lines: 21

tomb@hplsla.HP.COM (Tom Bruhns) writes:

clldomps@cs.ruu.nl (Louis van Dompselaar) writes:
>
>Can anyone help me with my quest for a fast A/D for video
>purposes. I now work with a A/D which only is 3 bit.
>It uses the ordinary 8 comparators, combiner etc.

I used a Sony chip last summer - CXA1096P, I think.  It went up to
about 8MegSamp/Sec (8-bit flash type).  It was much nicer to design
with than a similar (at least, similar specs) Brooktree ADC, as the
Sony had separate analog and digital supplies (as any good ADC should)
while the Brooktree device (don't remember part #) functioned off a
single supply and required a 'calibration' pulse every couple hundered
usec or so (it was set up to happen in conjuction with the h-retrace,
but just got in the way for my application).  I also remember seeing
an add from TRW around that time (end of last summer) that they
were coming out with a video-bandwidth 8-bit flash device, but a
few calls produced no specs or samples.

Jay Kubicky