[sdiy] EDN: Shift-register based Quadrature oscillator

[René Schmitz]

rdrake wrote:
> Hmm, this looks interesting...  why didn't we think of that?

Actually this is fairly old. I've seen it done before with 4017s. Though 
not with multiphase, but thats straight forward.

The trouble starts when you try to get 16bit accuracy out of this.
Besides the smoothing filter he uses is a source of phase error
between the individual phases.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159