[sdiy] SSM2164 last time buys

[Paul Perry]

It isn't all that easy to just replace a specific chip with discretes - 
discrete lends itself
to some circuits, but others are easier built on chip, eg. often you want 
matched
parts that track in temperature.

That MC1495 brings back memories, I designed my first commercial ring mod 
using that
along with an ICL8038 oscillator chip. First the 1495 went out of 
production, then the
8038!! Probably better with the LM13700 oscillator and AD633, but 
still......

paul perry Melbourne Australia

----- Original Message ----- 
From: "David"

> 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
>