[sdiy] SSM chip reissue

[David G Dixon]

All I'm saying is that I've been using 2164 as an exponential converter in
all my VCO designs, and those designs are very popular, primarily for their
excellent tracking.  Hence, it is good enough for me, and by extension, for
Intellijel customers, of which there are a significant number.

I don't actually know how much of this stuff has been sold -- a lot, anyway.
 

> -----Original Message-----
> From: Neil Johnson [mailto:neil.johnson71 at gmail.com] 
> Sent: Monday, April 24, 2017 3:13 PM
> To: David G Dixon
> Cc: Ian Fritz; Tom Wiltshire; Jay Schwichtenberg; SDIY List
> Subject: Re: [sdiy] SSM chip reissue
> 
> Ian Fritz wrote:
> > The expo response
> > of the 2164 is pretty poor, compared with what one can do 
> with a good 
> > monolithic pair. Etc.
> 
> The 2164 was never designed for analogue computing 
> applications in mind, so log conformity over a wide range was 
> never a design goal.
> It's really four SSM2018 Frey cells hard-wired in VCA mode 
> with the I-to-V converters chopped off.
> 
> David G Dixon wrote:
> > The exponential response of the 2164 is good enough for just about 
> > anything INTELLIJEL CUSTOMERS need it to do.  It is the 
> heart of the 
> > Dixie, Rubicon, and Atlantis VCOs
> 
> There fixed that for you.
> 
> > and we have sold about a million dollars worth of those
> 
> Is that kind of information public knowledge?  Does that 
> figure include the various versions of those modules?
> 
> Thanks.
> Neil
> --
> http://www.njohnson.co.uk