[sdiy] SSM2164 last time buys

[Paul Maddox]

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.
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