🚀 go-pugleaf

In article <1992Apr7.195910.8652@acsu.buffalo.edu> v064mb9k@ubvmsb.cc.buffalo.edu (Neil Gandler) writes:
>Has anyone used the DS1267 I.C. made by dallas semicomnductor in an
>application to control volume in a stereo. The data sheets given to me
>when I received three of these chips in the mail were not too helpfull.
>They gave no example circuit. I payed $18 plus shipping for three of these
>chips it would be a waste of money if I can't use them. Does anyone have
>data sheets on this I.C. that gives an example circuit or does someone
>know how I can use it. Its outputs are clearly described. Showing
>the output as if it were a real dual potentiometer. But the inputs
>are a reset pin, port data input/output and clock input.
>I would appreciate any help or suggestions
>  Thankyou

Well, the data sheets don't give any example circuits, but they do show
everything you need to know if you can hook up a regular potentiometer.
The data sheets, of course, come in Dallas's data book which can be purchased
for about $5 from Newark.  You could probably talk Dallas into sending you
either the entire data book or the sheets you need if you convince them you're
a Real Engineer.  (I talked to one of their engineers once about a DS5000
problem... nice people!)

If you don't like this approach, I can fax them to you if you like.

Someone already mentioned that for audio applications you need a log pot.
On the other hand, you can mess around with paralleling resistors and get
something that's pretty close to looking like a log response.

The DS1267s we have were used to automate some electron diffraction boxes
that used to have you set some amplifier gains by hand.  Now the computers
set the gains...

						---Joel Kolstad
						kolstad@cae.wisc.edu