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=YRsoFbPqRpogUCCPQxoBhJGkOPX7cNTrTUWbYhIj9QI=; b=lKvl+2xne539E+qoMJfVNo97T9kW7/nna5VSjFvkZ4VaBWIJvqrYnIsTLZgECl9k4h nwSVK0mTs0c5HGs0AfCI2uzHt3rHWkMdVJO9WSg+TrzNw/r7iUcwDTJS8JlCCv/aozYI 2L1eUNWoKjNgY8fOyN3PKBJkBfIZaK+pjB0FOZSqATs68XKzR708dwWw1BqfNLV43OEb eYNlukHaA/UyTw4A2gXpSiun6zNaAReaHhPNj3cchmQlbf49aA6vFcYUoSqWTmk1igtv 0xlPP+a25vAjciGN65ctpBs9XHeI7ICOrpUs0UKvTqR13ETaeOI62Q3jWiKChCWZHWJS 9DdA== MIME-Version: 1.0 X-Received: by 10.112.17.34 with SMTP id l2mr14309477lbd.117.1445729122844; Sat, 24 Oct 2015 16:25:22 -0700 (PDT) In-Reply-To: <562C0FBF.2050604@neurotica.com> References: <201510162117 DOT 12255 DOT ad252 AT freeelectron DOT net> <20151023070213 DOT GA19358 AT visitor2 DOT iram DOT es> <20151023212815 DOT GA31581 AT visitor2 DOT iram DOT es> <20151024225457 DOT GA25400 AT visitor2 DOT iram DOT es> <562C0FBF DOT 2050604 AT neurotica DOT com> Date: Sat, 24 Oct 2015 23:25:22 +0000 Message-ID: Subject: Re: [geda-user] Stable and low noise references From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" To: gEDA users mailing list 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 24, 2015 at 11:09 PM, Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com] wrote: > On 10/24/2015 06:54 PM, Gabriel Paubert (paubert AT iram DOT es) [via > geda-user AT delorie DOT com] wrote: >>>> This is becoming offtopic, but the LTZ1000A is, to my knowledge, still >>>> the best reference available in terms of noise and long term stability, >>>> and until a few years ago, I only used buried Zener references when I >>>> needed high stability. >>> >>> It is. If you look at any of the tear downs people do of meters above >>> 6 digits they are all using that reference or one made by LT custom >>> for Fluke. >> >> I was not aware of that, but this means that this device has cornered a >> market from people accepting to pay for the performance and might not be >> EOLed too quickly. > > This is very much an LT thing. I think I can count the number of > parts they've EOLed, ever, on one hand. Maybe two, but not by much. Good to know. > -Dave > > -- > Dave McGuire, AK4HZ > New Kensington, PA -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/