24 Bit I2S Stereo DAC up to 200 KHz SR

[JovianPyx]

http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,719,859&Prod=PMOD-I2S

This is the same DAC circuit designed by Eric Brombaugh that I used in several of my FPGA synths. It is capable of up to 200 KHz sample rate. It will plug into a "standard" 6 pin Digilent port which appears on many devices including many FPGA development boards.

I post this only as a heads up to those looking for a stereo DAC with lots of bits and reasonably high sample rate. I do not work for Digilent.

[mhelin]

Circuit is the same but the pinout is different. Order of the DAC clock and data pins is mirrored in the digilent version.

[JovianPyx]

True that. Eric laid out his board with components on both sides. Digilent reworked the board to put all components on one side. In the process, pins were changed. This is easy to deal with via the UCF file.

[sneakthief]

Hope this isn't a thread-hijack...

For anyone who wants to do 2 stereo I2s in/outs via usb, check this out:

http://www.minidsp.com/onlinestore/details/64/14/i/o-cards/ministreamer

(it only goes up to 24/96 though)

Now if there were only a simple USB/Firewire to multichannel audio I2S interface!

I was hoping to diy some multichannel adc/dac's (ie. 8in/8out) but the only readily available "solution" to bringing that many I2S channels in and out of a computer is either:

1. buying an expensive dev board (eg. Dice II/III) or

2. converting it to ADAT (http://electronics.dantimax.dk/Kits/Digital_audio/index.html) then bringing that to a pc audio interface device that has ADAT in and out.

The costs for both add up quickly, making proper audio interfaces look like much more attractive alternatives to the diy-route.

[cloudscapes]

[sneakthief]

[mhelin]

If all you need is a multichannel DAC then you might be interested on this one:

http://www.asus.com/product.aspx?P_ID=SzSNJFIgevnog69P

Not bad regarding the price (< $50).