DAC King

[Rene Schmitz]

At 14:42 12.01.00 -0600, Paul Schreiber wrote:
>
>So, if we want a DAC to control a VCO over 6 octaves, we need how many
>bits?? Anyone??
>
>8-bits? 6/256 = 23.4mv/step err no
>12-bits? 6/2048 = 3.9mv/step  err no
>14-bits? 6/16384 = 366uV/step OK!

Pardon, but I can't follow you here. Whats that maths? 
I assume 6V/256=23.4mV.

Divide 10.5833V by 127 steps = 0.00833V per step. Now its Ok. If LSB error
can be neglected. As you say a matter of scaling, and accurracy.

Bye
 René


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