AVR-Chat

Jim Wagner wrote:

>Sorry, but wrong about the tolerance! 
>
>Each successive leg has half the tolerance contribution of
>the leg just above it in the ladder. With 1% resistors, the
>over-all tolerance will be in the 3-4% range. 
>
>  
>

  Quite right.  My bad.

>What may be more critical is monotonicity, especially the
>step going from 0x7f to 0x80 (in an 8-bit) DAC. 
>  
>
  True enough, I hadn't even thought ot address that issue


tom