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Date:	Thu, 22 Oct 2015 15:20:42 -0400
Message-ID:	<CAM2RGhSXgieJ+p5i_nQsAUMRQh1rp1PXHx_jB5p2XECY6jgjQQ@mail.gmail.com>
Subject:	Re: [geda-user] The Chippocolypse is coming!
From:	"Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Sat, Oct 17, 2015 at 1:17 AM, al davis (ad252 AT freeelectron DOT net)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> On Monday 12 October 2015, Bob Paddock
> (graceindustries AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
>> Looks mostly like Audio and Audio Op-Amps, among some Line
>> Drivers and even a COP8micro (People really used those?)
>>
>> That Corp makes studio grade parts:
>>
>> http://www.thatcorp.com/
>
> "That" is great if "that" makes what you need, but it's all
> special stuff.  What happens when "that" is EOL?
>
> The big loss here is a high performance op-amp.  I use the
> LM4562 in some designs.  Can anyone recommend a truly comparable
> dual op-amp?  2.7 nv/rtHz noise, 45 mHz GBP, 20 v/us slew rate,
> drives 600 ohms.  I can find alternatives that might meet any
> one of those, but all???
>
> At least when the 4562 is no longer available, since it is an
> op-amp with standard pinout, something else will work with only
> a minor performance hit.  The "minor performance hit"
> alternatives are mostly cheaper.

That is not too different from the LME49720 which *might* still be out
there in the TO-99 package. For some reason the TO-99 packaged
versions of the LME amplifiers are not being killed off.

-- 
Home
http://evanfoss.googlepages.com/
Work
http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/

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