Designing a Patchable Modular Synthesizer with Memory

Kevin majmoog at leonardo.net
Wed Mar 6 22:16:15 CET 1996


>>   Of course, the biggest problem w/ Clive's pie-in-the-sky modular is the=20
>>   switching matrix.  To build a 64x64 (what I consider the minimum useable=20
>>   number) audio/cv switching matrix
>>
>>You can get 64x64 effectiveness with a lot less if you're clever.
>
>>CMOS switches can do the job just fine.
>
>Check out the analog matrix ic´s from Mitel !
>They have got some circuits in different sizes. The biggest has got a matrix
>with 8x16 !!! They are very easy to program (one DATA line, one CS, a
>STROBE, one RESET, and an address port.)
>
>You can switch up to 12Vpp (so maybe you have to convert control voltages of
>+/- 15V bofore the matrix and restaurate them after the matrix).
>
>Package: 40 pin DIP or 44 pin PLCC
>


Have you checked out the Harris CD22M3494 crosspoint switcherS? 8x16 as
well in assorted package designs.

Anyone know how the Harris compares to the Mitel?

-Kevin





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