[sdiy] SSM2164 to use as ring modulator...

rsdio at sounds.wa.com rsdio at sounds.wa.com
Fri Feb 14 04:00:46 CET 2014

Whoa! This is a part that is no longer being made. Why would you  
design something new to use parts that might be the only way to  
repair some vintage analog synth? I know that Analog Devices  
continued to make the SSM2164 after SSM, for a while, but I see that  
their web site currently marks this part as discontinued/obsolete  
(last time to buy: Dec 2012, last ship date: Dec 2013).

I don't have a complete list of the vintage synths that use the  
SSM2164, but someone might think you insensitive to go out of your  
way to use up these parts when they might be needed for existing  
designs. Don't do it, man!

I'd recommend designing around the AD633 or some other modern part  
that's still recommended for new designs. If there are distortion  
characteristics in the SSM2164 that you like, I bet you can design  
that distortion into your ring modulator, and it could be even more  
flexible. Note that Analog Devices still manufactures the SSM2108, a  
single VCA.

Brian Willoughby
Sound Consulting

On Feb 13, 2014, at 12:27, Jean-Pierre Desrochers wrote:
> Would it be a good idea to use the venerable SSM2164
> for a ring modulator project (dual, quad)?
> The modulation could be log (by default) or lin
> with some tweakings..
> I could also use the AD633 but I'm just wondering.
> I already have plenty of 2164 chips so..
> JP

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