AW: AW: Matrix board! (a CMOS one)
Ullrich Peter
Ullrich at kapsch.net
Fri Feb 26 16:05:25 CET 1999
Hallo DIYs!
I built my matrix applications with other circuits:
MT8816 from Mitel
This is a 8x16 matrix cuicuit in a 44pin PLCC case.
It works with voltages from 4.5V to 13V (sorry not 15V).
Switches signals up to video frequencies!
Have a look at it in the MITEL databook
"DIGITAL/ANALOG communication handbook".
There are also other (smaller) matrix circuits...
They are controlled by 7 address lines, 1 data line, chip select, strobe
and a reset line that resets the whole matrix. So you can build many
matrix circuits in parallel with a chip select decoder.
I made a board (in the company I am working for) with 8 circuit
on one eurocard (160x100mm). But used only one output per circuit
(was necessary as I used every part not as a matrix - I used it as
a programmable mixer. I could mix up to 16 signals as I used an inverting
amplifier on the output as summing amp.
Here you could download the datasheet if you want:
http://www.mitelsemi.com/products/pdf/dataserv.cgi?mt8816
For a fast view you could have a look at the first page of the datasheet at:
http://www.mitelsemi.com/products/htm_view.cgi?MT8816
Ciao
Peter
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Ing. Peter Ullrich mailto:ullrich at kapsch.net
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Hardware & Software Developer / Electronic Musician
.oooO KAPSCH AG / SGB2 Vienna / Austria
( ) Oooo. Traffic Control and Transmission Technology
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