X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=McQqX3ps3TAuGS6FriTj/dyFkbIdpYHOSh7WbHouJuY=;
        b=XT/zpRts3990UOGhQxqvSKS5gbNBrSYBZnlCO/Cfs8wRWtJzDHtVbeYr1kh33wuQ85
         EAxSLdG6V8QrT3R41wwF1MGkfwFObkAb7S8TRyXu/DOR7nvuhVIdOohafvagk4D36RsU
         5h9Omi6Q1bhIzKy9d31cYnF/MpXZqcCEiCCJz+RQTOy1EGnsCUl9V7zPx0FNVyCf+T3s
         B1CkPZfq6kCWVidzsqmQbshRgawX03POhPg+iXnA+rWEqhkbPWKYIv/z45CaHiGZ61VQ
         LQyA5zwzA3GjZ3KMXe9+tr9rLYVUCk/p5wSmegcAn5jkf4DdJW/jXuyuElkhpFMFmWIJ
         jZGw==
MIME-Version: 1.0
X-Received: by 10.112.17.34 with SMTP id l2mr9450207lbd.117.1445541642503;
 Thu, 22 Oct 2015 12:20:42 -0700 (PDT)
In-Reply-To: <201510162117.12255.ad252@freeelectron.net>
References: <CAM2RGhThg+5B6iGQ__Uh4=MxPeSVb9p1gS_9C+ik--E8AqS3GA AT mail DOT gmail DOT com>
	<CAOuGh89DAYWn49KnuqHO6NHcyB3GUoVsPD4n8FR=wcg8AY6wYw AT mail DOT gmail DOT com>
	<201510162117 DOT 12255 DOT ad252 AT freeelectron DOT net>
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>
To: gEDA users mailing list <geda-user AT delorie DOT com>
Content-Type: text/plain; charset=UTF-8
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

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/