When I missed the 1st round of Alien DAC boards, I decided to do my own board layout to best suit what I wanted. The following is what I came up with. It measures 50x26mm, and for the most part, I just copied the schematic used by the Alien DAC, dropping the BUF634 section, as I only plan to have this bus powered, replaced the regulators with the SOT23-5 versions, which allows the use of TPS79333 and TPS793475 3.3v and 4.75v fixed regulators, which are less expensive than REG101, and pin compatible. I also went to 6.4x13.3 mm film coupling caps for the output, instead of 6.3mm electrolytics. Anyways, I am looking for comments on the DAC and layout, especially ones relating to how to improve it.
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8/10/06 at 5:23am