Technology
DIY: USB Sound Card
PCM_FRONT.jpg

In the past, making your own sound card could have been a difficult task. The best part about this project is when you are all done, it is as simple as plug and play. You don’t need any drivers under XP or Vista. If you know how this would work under Linux, please leave a comment below. Thanks!

Make a sound card is no more a complex issue. If you use great IC PCM2702 from BURR BROWN / Texas Instruments you can create a fully functional USB sound card. This sound card can be powered from USB port and has one stereo output. You donÂ’t need to install any driver for Windows XP and Vista, because they are already inside. This is really plug and play.

Make your own USB Sound Card

26 thoughts on “DIY: USB Sound Card

  1. If I wanted digital optical out, would I just attach the led & coupler between the Delta/Sigma and the DAC or is it more complicated?

  2. Check my other comment, which appears to be held for moderation. The newer chips have SPDIF outputs.

  3. Hum! Must have got lost. Anyway, the PCM2702 according to TI’s site is obsolete. The PCM2704 is it’s replacement, link:

    http://focus.ti.com/docs/prod/folders/print/pcm2704.html

    And it does indeed have SPDIF out. An interesting thing, the 2705 and 2706 chips can be interfaced to with I2S – a version of I2C intended for sound. It’d make them fairly easy to talk to with a microcontroller.

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