[sdiy] modern AD/DA chips?

[Scott Gravenhorst]

Tom Wiltshire <tom at electricdruid.net> wrote:
>
>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.

I agree, they are nice.  I use a Cirrus CS4344 24 bit stereo DAC on 3 different
FPGAs.  Not expensive and good performance.  CS4344 does I2S.


>> 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
>
>
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-- ScottG
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-- Scott Gravenhorst
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