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Mon May 19 01:20:45 EDT 2014

Multiple control voltages

Maybe it's good to use the 2-channel dac to control a couple of
channels through sample & hold?  Update rate is quite high so 8
channels is not a problem.  This would allow one channel in the dac to
be dedicated to temperature measurement.

Something like LTC1391[1].

Another thing to try is to use a multi-dac like LTC1665[2], and use
some kind of multiplication setup to get to higher or logaritmic
precision, e.g. one for octave cal, one for octave, one for relative
within octave.

[1] http://www.linear.com/samples/LTC1391
[2] http://www.linear.com/samples/LTC1665




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