Anyone make a 16-bit R2R chip or kit? - diyAudio
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Old 15th May 2011, 05:38 AM   #1
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Default Anyone make a 16-bit R2R chip or kit?

Hi I'm having trouble hunting down a 16-bit DAC chip that uses an R2R network for conversion.

Even better would be a DIY kit for a computer DAC using such a chip.

Does such a thing exist?
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Old 15th May 2011, 06:56 AM   #2
singa is offline singa  Singapore
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Hi, Sorry all current production audio dacs are sigma delta or bitstream,even
for PC usb use.I think you still can get TDA 1541A,PCM63,PCM1702 or even the more recent PCM1704 24bit.There are chinese boards if you do a search.
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Old 15th May 2011, 01:38 PM   #3
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Mouser and Digikey stock the PCM1704 and PCM56.

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Old 15th May 2011, 01:50 PM   #4
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Do you literally want an R2R based DAC or do you mean a 'old fashioned' binary weighted DAC as opposed to a sigma-delta based DAC? The monolithic IC parts so far mentioned aren't actually R2R as that approach has limited usefulness in practice owing to infinitesmal output compliance.
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Old 15th May 2011, 01:51 PM   #5
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Default R2R dacs

There are a number on the bay. Raindrop Hui offers them. Kindest regards

Last edited by john dozier; 15th May 2011 at 02:01 PM.
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Old 15th May 2011, 04:31 PM   #6
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Quote:
Originally Posted by abraxalito View Post
Do you literally want an R2R based DAC or do you mean a 'old fashioned' binary weighted DAC as opposed to a sigma-delta based DAC? The monolithic IC parts so far mentioned aren't actually R2R as that approach has limited usefulness in practice owing to infinitesmal output compliance.
Yup, you're right.
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Old 15th May 2011, 04:53 PM   #7
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The kits on the bay use PM58 and PM63 chips in parallel.
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Old 15th May 2011, 07:22 PM   #8
Kovax is offline Kovax  Croatia
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Maybe this would be of interest?

Arda Technologies - AT1401 Flagship Audio D/A Converter

Cheers!
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Old 15th May 2011, 08:40 PM   #9
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I did inquire them about one of their products and they replied "thanks for interest".
From a company that has it's HC in a suite on second floor of a building that has bars at the first floor, I would take their claims with a grain of salt.
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Old 15th May 2011, 08:50 PM   #10
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24-bit R2R? I doubt that, unless the converter is segmented.

jan didden
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