[sdiy] DIP LM13700 discontinuation
ijfritz at comcast.net
Wed May 19 20:59:50 CEST 2021
Thanks! Last I looked I didn’t find anything, but now I see a number available.
> On May 19, 2021, at 12:12 PM, Jean-Pierre Desrochers <jpdesroc at oricom.ca> wrote:
>> Yabbit — what if you need to test a dozen or so to select for performance, eg low offset and variation? There should be ZIF sockets for these!
> When I bought this universal programmer it came with a HUGE
> set of ZIF to DIP adapters (37 overall) ..
> These adapters are very handy !!!
> -----Message d'origine-----
> De : Synth-diy [mailto:synth-diy-bounces at synth-diy.org] De la part de Ian Fritz via Synth-diy
> Envoyé : 19 mai 2021 14:05
> À : chris
> Cc : synth-diy at synth-diy.org
> Objet : Re: [sdiy] DIP LM13700 discontinuation
> Yabbit — what if you need to test a dozen or so to select for performance, eg low offset and variation? There should be ZIF sockets for these!
>> On May 19, 2021, at 7:44 AM, chris <chris at chrismusic.de> wrote:
>> Hmm, I don't understand why people are dogmatically sticking to DIP.
>> Soldering SO is a piece of cake. Even my 60+ years old eyes and
>> fingers have no problems with SO. It's not as if it were 0.4mm pitch or BGA.
>> Or is it the old wives' tale that the holes make it sound better?
>> Like f holes on a violin...?
>>>> On Wed, 19 May 2021 08:06:59 -0400 (EDT) mskala at ansuz.sooke.bc.ca wrote:
>>> It seems Texas Instruments is discontinuing the LM13700N - that is
>>> the DIP version of the part. Mouser lists it as "End of Life" and
>>> links to this discontinuation notice dated May 12, 2021, with the
>>> last order date May 12, 2022:
>>> I haven't been able to find this notice on the TI Web site, which
>>> still shows the product's status as "active," including the DIP version.
>>> CoolAudio makes a 13700 clone and their data sheet describes both DIP
>>> and SOIC versions, but the DIP seems to be a unicorn. CoolAudio
>>> doesn't sell it on their Web site, neither do any distributors, and a
>>> Web search for the purported part number of V13700D only turns up the
>>> data sheet. I don't believe it really exists in any way accessible
>>> to hobbyists. Maybe they'd make it for you if you ordered a million units.
>>> A Chinese manufacturer called "XinLuDa" offers a DIP dual operational
>>> transconductance amplifier called the XD13700, available through
>>> LCSC, which seems to be a clone; I don't know how faithful it is or
>>> isn't. They do note in their data sheet that there are differences
>>> in the buffer units between the XD13700 and XL13700 (which is their
>>> own surface-mount version of a similar part). Interestingly, they
>>> claim that the DIP version is better - in which case why make them different at all?
>>> Alfa offers a 3280 clone (data sheet says both DIP and SOIC, but the
>>> Web site only lists the SOIC); and something called the AS13704,
>>> which is a 13700-like OTA in a quad instead of dual configuration, and only in SOIC.
>>> Neither can directly replace a DIP 13700.
>>> I think the 13700 may be a bellwether for through-hole packages in
>>> general. As basically the last OTA to be available in a through-hole
>>> version from a major manufacturer, it has a big share of the market
>>> for through-hole analog electronics. If it makes sense to
>>> discontinue this product, that means the market in question is now
>>> too small to be worth serving anymore, and that assessment will be
>>> applied to other products too. Memento mori.
>>> Matthew Skala
>>> mskala at ansuz.sooke.bc.ca People before tribes.
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