Russell Kent wrote:

Here are a whole pile of alternatives to that Maxim mux you posted.  These
are A/D converters (ADCs) that have built-in multiplexers (muxes).  All
but the last one are 8 channel:
http://www-s.ti.com/sc/ds/tlc3578.pdf (14-bit, serial connection,
auto-sample mode)
http://www-s.ti.com/sc/ds/ads7828.pdf (12-bit, I2C serial bus, up to 4 per
bus)
http://www-s.ti.com/sc/ds/ads7844.pdf (12-bit, serial connection)
http://www-s.ti.com/sc/ds/ads8344.pdf (16-bit, serial connection)
http://www-s.ti.com/sc/ds/ads8345.pdf (16-bit, serial connection)
http://www-s.ti.com/sc/ds/ads7852.pdf (12-bit, parallel connection)
http://www-s.ti.com/sc/ds/tlv2553.pdf (12-bit, 11-channel, serial
connection)

As for your quad 1-of-2 mux/demux, try this:
http://www-s.ti.com/sc/ds/sn74cbt3257.pdf

Russell Kent

Thanks Russell. That last A to D chip looks great. Super simple, super
low cost way to go. I don't know what they cost but it looks like you could
build an audio out EFIS for $20 in parts not counting the sensors.

Paul Lamar
 
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