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From: John Popelish
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X-Mailer: Mozilla 4.7 [en] (Win98; U)
Subject: Re: What's different from "analog multiplexer" and "digital multiplexer"
Date: Tue, 21 Jan 2003 14:29:47 GMT
NNTP-Posting-Date: Tue, 21 Jan 2003 09:29:47 EST
> I have two questions:
> 1.How to tell what's different from analog multiplexer and digital
An analog multiplexer acts as a multi position switch. Its main
effect on the signal is to add series resistance (the equivalent of
contact resistance). These can be used to pass digital signals as a
subset of analog but without regenerating them.
Digital multiplexers are logic functions (something like multi
position switches) with logic buffers on their outputs that generate
fresh signal levels for logic ones and zeros. All signals applied
will be converted to digital highs and lows or the best approximation
of those the output stage can manage.
> 2.I need a multiplexer that can operate in low switch frequency,whitch
> (analog / digital) multiplexer is fit for this conditions??
Are the signals passing through the multiplexer ones and zeros or
variable signal voltages anywhere between two extremes?
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