Anyone make a 16-bit R2R chip or kit?

[cuallito]

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?

[singa]

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.

[lakeside]

Mouser and Digikey stock the PCM1704 and PCM56.

~Mike

[abraxalito]

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.

[john dozier]

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

[cuallito]

Originally Posted by abraxalito

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.

[john dozier]

The kits on the bay use PM58 and PM63 chips in parallel.

[Kovax]

Maybe this would be of interest?

Arda Technologies - AT1401 Flagship Audio D/A Converter

Cheers!

[SoNic_real_one]

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.

[janneman]

24-bit R2R? I doubt that, unless the converter is segmented.

jan didden