[sdiy] Consider this DAC

[cheater cheater]

Would it be unthinkable to use a digital crossover and send AC though
a D-S and DC through a DC coupled DAC?

D.

On Sat, Mar 13, 2010 at 19:52, Antti Huovilainen <ajhuovil at cc.hut.fi> wrote:
> On Sat, 13 Mar 2010, ASSI wrote:
>
>> On Saturday 13 March 2010, Antti Huovilainen wrote:
>>>
>>> Surely achieving < 1mV (for max 5V signal) noise floor and drift
>>> can't be quite that hard?
>>
>> I think you need to calculate that again... for a fullscale signal of
>
> Yes, but the question was whether 12 bit dac would already be at the limit
> of the rest of the circuitry.
>
>> If you want resolution but not precision - go delta-sigma.  This DAC
>> is for DC accuracy and yes, it will be hard to keep that precision
>> throughout the complete signal chain.
>
> Delta-sigma is rather the other extreme of the accuracy scale. For CV you
> want good enough accuracy (say, < 1 mV error) and a few bits higher
> resolution from that. From what I've read, delta-sigma audio DACs don't
> provide good enough DC accuracy.
>
> Antti
>
> "No boom today. Boom tomorrow. There's always a boom tomorrow"
>  -- Lt. Cmdr. Ivanova
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