AW: AW: Matrix board! (a CMOS one)

Haible Juergen Juergen.Haible at nbgm.siemens.de
Thu Feb 25 10:46:20 CET 1999


	>I just discovered the Harrys CD74HC22106 8x8 digitally controled
analog
	>switch array, that can be used instead of a matrix board. It can be
	>cascaded if you want more inputs/outputs, and can handle +-5V or
0/10V
	>signal and control voltages. Patches can be stored in RAM and
recalled when
	>desired.
	>
	>I fear that THD could bring some problems with control voltages.
It's rated
	>at 0.05% (@ RL 10k, Vi 8Vpp, supply +-4,5V), but if I want 10Vpp,
with +-5V
	>supply? Datasheet tells me it's possible, but what about the THD?
:/
	>
	>Maybe worth tailoring the control and signal voltages to fit in the
chip
	>requirements. Can it really works, or it's just another waste of
time?

Does it provide mixing of several inputs to one output ?
(If not, it cannot replace an EMS style matrix.)

JH.




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