[time-nuts] Linear Interpolator
Brooks Shera
ebs at wildblue.net
Fri Jun 30 17:54:05 EDT 2006
Inspired by Ulrich's lead regarding the high resolution TDC, I asked the
Acam US rep for a quote on the TDC GP2. As Ulrich indicated they are not too
expensive: $28 quantity 1, $26 quantity 10. Sounds great. Temperature
coefficient isn't quoted but it will be considerable - presumably can be
corrected in software.
For me the catch seems to be that they are packaged in a QFN-32. The pin
spacing is 500 microns and the open space between the solder pads is only
200 microns. Perhaps I am too timid but this sounds like trouble for manual
soldering, that's assuming the low cost PCB suppliers could make the
appropriate solder mask. Any comments from the experienced?
Acam makes a dandy evaluation board, the ATMD-GPX, but for this they want
$2298. Oh well.
Brooks
----- Original Message -----
From: "Ulrich Bangert" <df6jb at ulrich-bangert.de>
To: "'Discussion of precise time and frequency measurement'"
<time-nuts at febo.com>; "'Magnus Danielson'" <cfmd at bredband.net>
Sent: Thursday, June 29, 2006 11:41
Subject: Re: [time-nuts] Linear Interpolator
Hi Stephan,
if you need a ps resolution time interval counter for use in a project
of your own, why not simply go out and buy you one? For example here
http://www.acam.de/index.php?id=105
They are not that expensive because they are made to be married with
cheap sensors.
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