[sdiy] Digital echo chip

[Tim Escobedo]

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Princeton Technology also makes the PT2399, a little bit simpler. The
Princeton Technology data sheets are pretty sparse for this one, too. A
slightly more detailed data sheet was dug up by this guy:

http://www.pharaohamps.com/data/2399.pdf

Smallbear sells the PT2399 and the PT2396  for $3.00 and $3.50.
http://geofex.com has a simple layout for the PT2399 based on the data
sheet schem.

--- Scott Bernardi <sbernardi at attbi.com> wrote:
> I came across the PT2935 (Princeton Technology) digital echo IC at
> Jameco (www.jameco.com) for $3.95.  The delay can be continuously
> variable with a resistor. You can supposedly get up to 800msec of
> delay
> with an external 256k DRAM chip in extended delay mode. There was a
> very
> minimal datasheet on the Jameco page. I got to the manufacturer's
> website yesterday but today it seems to be down
> (www.princeton.com.tw).
> Anybody have any experience with this chip?  It looks pretty
> interesting, and it's cheap enough.
>
> --
> Scott Bernardi
> sbernardi at attbi.com
>
>


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