Make a DIY USB audio DAC in a day
Subject: General Tech | August 28, 2013 - 01:06 PM | Jeremy Hellstrom
Tagged: usb audio, ti, DIY, burr-brown
Perfect for a beginner electronics project or just a way for someone with experience to quickly put together a working audio DAC this project that Hack a Day linked to will give you seriously decent sound. While the components are all labelled Texas Instruments they are in fact from Burr-Brown as TI purchased the maker of high end DACs a long time ago. The PCM1794A is a 132dB SNR 24-bit 192kHz DAC which outperforms the DAC found in many stereos and the OPA4134 OpAmp is nothing to sneer at either. Unless you can etch your own boards you will have to order one and wait a bit before putting this project together but it sounds like it will be work it
"The on-board +3.3V and -5V voltages are generated by inductor-less power supplies. As [Jan-Erik] mentions in his write-up, the ‘high-end’ was put between single quotes because the PCB is single sided and uses through hole passive components. The board was designed using Kicad, etched by himself and put in a machined enclosure. All the production files can be downloaded from his website so you may produce it within a day."
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