8 Dec
2011
8 Dec
'11
6:46 p.m.
On 8 Dec 2011 at 19:47, Bill Sudbrink wrote:
I'm thinking of building a "somewhat
vintage" two-channel DAC board,
intended to drive an oscilloscope as a vector display.
Well, if you want "vintage" (and I assume you do) there was at least
one such project in an old issue of Byte or Kilobaud (IIRC).
Given that typical period (I'm assuming vintage all the way) o-
scope's linearity is none too wonderful, you might get away with a
single 8255 PPI (or similar parallel chip) and a simple R-2R "ladder"
DAC. You can't get much cheaper than that.
--Chuck