[sdiy] What type of switch would this be?

[Peter Ullrich]

Hi!

>I recently found some PCB's with interesting 8x16 crosspoints in DIP
>package: MT8816AE
>Datasheet at: http://cn.100y.com.tw/pdf_file/MT8816AE.pdf 
>
>I'm willing to donate two of these (they are soldered on a double
>eurocard) to anyone who promise to build something interesting and 
>share the results with the list! 

I used these chips quite a lot in our company for audio matrices and mixers
(with summing resistors on the lines and a summing amp behind the matrix chip).
Works fine!

My universal MIDI interface for synths with keyboard matrix also has these chips
built in. I simulate the keyboard matrix with it (decoupling diodes added of
course). I built these interface into my Korg Poly61 as my keyboard contacs are
very bad... Woks also very fine - so also useable for TTL or CMOS signals. And
due to the bandwith the usage of this chip is also open for video applications.

I use the PLCC44 version of the chip...

Another chip I used before was the MT8812 in DIP40. Also a nice part.

The control in both designs has been realised with an 8051-family microcontoller
programmed with ASM and PLM51.

Ciao
Peter

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                               Ing. Peter Ullrich   
	               Hardware & Software Developer  /  Electronic Musician
                               Private Homepage: http://www.ullrich.at.tt
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