[sdiy] modern AD/DA chips?

[Tom Wiltshire]

On 5 May 2009, at 23:43, Tom Arnold wrote:

> On Tue, May 05, 2009 at 11:19:55PM +0100, Tom Wiltshire wrote:
>> You don't say exactly *how* you're going to be using these, but I'm
>> guessing that you're not wanting to connect them to a microprocessor.
>> For that, there are lots of good audio codecs that do both A/D and D/
>> A on one chip. These usually talk to a processor via a serial link of
>> some kind. I2S is a common one, SPI is another.
>
> You say there are lots of Audio combo ADC/DAC's, are there any decent
> precision ADC/DAC chips?  The only stuff I've found has been very  
> "audio" (
> Max INL of 16 if you're *lucky* ).

Oh, you can definitely do better than that. Try having a look at the  
Cirrus parts:

http://www.cirrus.com/en/products/

I've used one of their 24-bit stereo DACs, and apart from being too  
damn small and fiddly, it's a great part and cheap too.

> What I'd love in a perfect world is an Analog Devices ADUC7026 with  
> an Atmel
> core, or an Arduino port to ARM7, but I'll settle for a good ADC/ 
> DAC combo
> to hang off an Arduino controller...

Can't help you there, but maybe someone else knows how to start?

Regards,
Tom