VCA ICs ~ WAS: [sdiy] cloning a PPG EVU / Wave?

John Mahoney jmahoney at gate.net
Sat Aug 11 18:20:46 CEST 2007


>>>The Analog Devices SSM2164 ...
>>>The LM13700...
>>and
>>... SSM2018(T) and the THAT2180/2181.

What's great is that we have a range of choices from cheap to posh. 
In fact, those THAT chips are offered in A, B, and C versions, sorted 
by THD+Noise. So, there's a range within the range.

Yes, Tim D., Mouser now carries the THAT2180/2181. (Don't search for 
"THAT2180" because it won't show up.) Here are those THATs:
http://www.mouser.com/catalog/631/297.pdf


>For a synth the SSM2164 is plenty good enough (probably better than 
>the VCAs in most analog synths - although 'better' is perhaps a 
>subjective term as the VCA distortion also forms part of the 
>character of the sound).

Sure. So, what's a VCA with good character -- a discrete design like 
the Minimoog VCA?
--
john


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