[sdiy] SSM2164 last time buys

[Paul Maddox]

Nice,

 I like it, would like to "hear" it though.

Paul

On 25 February 2011 12:32, Olivier Gillet <ol.gillet at gmail.com> wrote:
> In the "potted module" category, has anyone seen this?
> http://www.schippmann-music.com/downloads/VCF2_Datasheet_ENG.pdf
>
> On Fri, Feb 25, 2011 at 1:23 PM, Paul Maddox
> <paul.Maddox.mail-list at synth.net> wrote:
>> David,
>>
>>  he has indeed, and I have one that I'm working with for a personal
>> project, however, they're not SMD, they're more like 0.6" wide body 16
>> Pin chip sized devices. I couldn't use them for a kit/commercial
>> product.
>>
>> Paul
>>
>>
>> On 25 February 2011 07:58, David <dingebre at 3dphysics.net> wrote:
>>> George Hearn has done this already. He built a 2040 clone, VCO, ADSR, and a
>>> VCA already in very small and useable potted packages with surface mount
>>> chips.
>>>
>>> http://sites.google.com/site/hearnmorley/
>>>
>>> David
>>>
>>> -- -----Original Message-----
>>> -- From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>>> -- bounces at dropmix.xs4all.nl] On Behalf Of Joe Grisso
>>> -- Sent: Friday, February 25, 2011 12:23 AM
>>> -- To: Paul Maddox
>>> -- Cc: SynthDIY
>>> -- Subject: Re: [sdiy] SSM2164 last time buys
>>> --
>>> -- Well, I know it's a sin to mention this in the SDIY forum (heheh), but
>>> -- I think a SMT discrete VCA could fit into a very tiny space. However,
>>> -- I don't know whether or not a good quality quad discrete VCA could fit
>>> -- into the space that a DIP16 would allow. A simple gilbert multiplier
>>> -- definitely would, but that's quite simple.
>>> --
>>> -- Best,
>>> --
>>> -- Joe
>>> --
>>> -- On Fri, Feb 25, 2011 at 12:18 AM, Paul Maddox
>>> -- <paul.Maddox.mail-list at synth.net> wrote:
>>> -- > The problem is, how much PCB space does his VCA take?
>>> -- > I suspect that using the SSM2164 will give me 4 VCAs in less space
>>> -- > than one discrete one. Plus the matching between them will be a lot
>>> -- > tighter.
>>> -- >
>>> -- > I full appreciate the reason for discrete parts, but in products that
>>> -- > you want to make small, or to keep costs down (Complexity/ease of
>>> -- > setup/PCB size/parts) there's a trade off to be had.
>>> -- >
>>> -- > Paul
>>> -- >
>>> -- > On 25 February 2011 06:55, David <dingebre at 3dphysics.net> wrote:
>>> -- >> It's interesting. In my interaction with Nyle in my Synthasystem
>>> project, I
>>> -- >> asked Nyle why his circuits were essentially all discrete except for a
>>> few
>>> -- >> op amps. His comment was he didn't want to be locked into a specialty
>>> chip.
>>> -- >> He wanted to be able to build his circuits 30 years down the road and
>>> not
>>> -- >> worry about a chip being obsolete. Here I am 35 years later and
>>> building his
>>> -- >> designs with no problem.
>>> -- >>
>>> -- >> The one exception is the MC1495 multiplier in his Ring Modulator.
>>> Although
>>> -- >> Arcade Game Chips has a stock of 30,000, or so he tells me :)
>>> -- >>
>>> -- >> David
>>> -- >>
>>> -- >> -- -----Original Message-----
>>> -- >> -- From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>>> -- >> -- bounces at dropmix.xs4all.nl] On Behalf Of megaohm
>>> -- >> -- Sent: Thursday, February 24, 2011 11:13 PM
>>> -- >> -- To: Tom Wiltshire
>>> -- >> -- Cc: synthdiy diy
>>> -- >> -- Subject: Re: [sdiy] SSM2164 last time buys
>>> -- >> --
>>> -- >> -- On Thu, Feb 24, 2011 at 9:04 AM, Tom Wiltshire
>>> <TOM at electricdruid.net>
>>> -- >> wrote:
>>> -- >> -- >
>>> -- >> -- > Analog Devices have listed SSM2164 as "Still In Production but
>>> Not
>>> -- >> Recommended for
>>> -- >> -- New Designs", and have "last time buy" by the available product
>>> models
>>> -- >> (leaded devices
>>> -- >> -- became obsolete some while ago).
>>> -- >> -- >
>>> -- >> --
>>> -- >> -- That sucks. I was going to start experimenting with that IC more
>>> -- >> seriously.
>>> -- >> -- I hadn't before because I assumed it would be obsolete soon. I
>>> didn't
>>> -- >> -- think it would be this soon!!!
>>> -- >> --
>>> -- >> -- At least there is the 13700 still. With the right circuit I
>>> actually
>>> -- >> -- prefer these over any specialty IC for VCA circuits.
>>> -- >> -- But...it's just a matter of time before these are gone, too.
>>> -- >> -- Time to go discrete.
>>> -- >> -- _______________________________________________
>>> -- >> -- Synth-diy mailing list
>>> -- >> -- Synth-diy at dropmix.xs4all.nl
>>> -- >> -- http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>> -- >>
>>> -- >> _______________________________________________
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>>> -- >> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>> -- >>
>>> -- > _______________________________________________
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>>> -- >
>>> --
>>> --
>>> --
>>> -- --
>>> -- Joe Grisso
>>> -- Detachment 3, Ltd.
>>> -- _______________________________________________
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>>>
>>>
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