Peter L. Peres wrote:
>>I don't think it's possible to get the *requested* precision
>>that way. Even 16 bits of precision it not easy, but
>>of course it depends on how you define "rather well"...
>
>
> 16 bits is plenty hard enough. It requires that the R/2R ratio for the MSB
> be better than 1/32768 accurate at least afaik.
>
TI has announced fast (1.25 Mc) 18 bit DACs (ADS1625 / ADS1626)
Stef

> 20 bit DACs are very common, made with PWM. Such are the DACs used until
> recently in the tuning of nearly all TV sets (now they are mostly
> synthesized). A long term stable 24 bit adc however is laboratory stuff.
> Olin L. pointed out why. A slow output PWM dac could be done easily with a
> pic (maybe not 24 bit).
>
> Peter
>
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