On Thursday 07 February 2008, Kirk Wallace wrote:
>On Thu, 2008-02-07 at 12:41 -0600, Jon Elson wrote:
>> Gene Heskett wrote:
>> > I have about 6 feet of chip books (yeah, I know, today it would take 300
>> > feet of shelves for half of them), Jon, but they don't include Analog
>> > Devices, and they are getting long in the tooth, sorta like me. :) I
>> > guess I'll have to go begging again.
>>
>> I don't use data books anymore. All the data sheets are on
>> line, and you are guaranteed to get the latest version, etc.
>> 30 seconds with Google will get you to analog devices, and you
>> can look up on their site keywords of resolver and digital, and
>> you'll get a check list of the applicable models and the most
>> important differences between models.
>>
>> Jon
>
>Many years ago when I was a drafter, I would go over to the engineer's
>area and go through the trash to find data books that I didn't already
>have. I lugged those books around for far too long, though I kept a
>couple for entertainment.
Yup, some of the comments in Nat Semi books are like MasterCard, priceless. :)
Need a fast analog buffer? They had 2 at the time, "fast", and "damned fast".
Slew rate was 6000v/u-sec. Heck, we've got $1.25 op-amps faster that that
now.
>The problem now with is that there are far too many choices. It's way
>faster to find what you need, but much longer to decide which one. I
>like the good ol days when you had to live with what you couldn't have.
Yeah, that too. I recall I needed a cmos analog multiplexer once, to switch
video sources in a character generator, and the only way I could get the
speed I wanted was to run 4000 family cmos stuff on the full supply
available, in this case 28 volts. That's 15 volt rated stuff. But I could
wrap a colored border around the character in a character generator when I
got done. The 4028 warmed up about 10 degrees F, but everything ran cool and
that way with zero failures for quite a few years after I built it. At 28
volts, it was the fastest cmos stuff on the planet. :-)
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Words have a longer life than deeds.
-- Pindar
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
