Re: [SI-LIST] : "Damn Fast" buffer

Robert Badal (robert_badal@net.com)
Wed, 31 Mar 1999 11:29:19 -0800

Hi all,

I wonder about damn fast buffer vs fast buffer. I designed LH4009 SEP
1988 at National. LH4009 had 10000 volt/us slew rate
and 150 MHz BW driving 200ma into 50 ohm load. LH0033 has 6000 v/us and
BW 100 MHz.
You can find the spec in National General Purpose Linear devices
databook 1989 (page 4-55 for LH4009 and page 4-8 for LH0033 ).
One must read the spec to decide which one is really fast.

Robert

Thomas Wirschem wrote:
>
> Both parts have been obsoleted (last time buy, latest 10/98). For alternate
> parts see
> http://www.national.com/search/search.cgi/design?keywords=LH0033
> The (formerly Comlinear, now National part) CLC111 - ultra-high slew rate
> buffer -
> is the improved performance device, that hopefully doesn't desolder itself from
> the board.
>
> Thomas Wirschem
> Interface Applications, Europe
> National Semiconductor
> thomas.wirschem@nsc.com
>
> Yes. I remember those. Boy they really got hot! I saw one get so hot
> that it
> desoldered itself from the board and fell out.
>
> Charles Hill, consultant
> Alta Engineering
> chuckh@altaeng.com
>
> At 09:15 AM 3/30/99 -0800, PETER_ARNOLD@hp-santaclara-om3.om.hp.com wrote:
> >
> > Shayle Hirschman wrote:
> >
> > > Does anyone remember a family by, I think National, called Damn
> > Fast?
> >
> >As I recall the LH0033 ("Fast") and LH0063 ("Damn Fast") buffer amplifiers
> were
> >in the linear databook. Fast op-amps in a can.
> >
> >
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