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<blockquote data-quote="meshsmith" data-source="post: 899909" data-attributes="member: 15646"><p>My little "Red Book DAC" - a PCM2707 based, low power USB DAC. This is the third iteration of the PCB, with an increasingly optimised component selection and ever-lower noise floor. I think this is where I'll stop for now - the fourth version would be nothing more than shrinking the components and getting the physical size even smaller (that crystal, for instance, is needlessly huge) <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Into 32Ω I'm getting less than 0.01% THD, with a SNR of around 96 dB - very close to datasheet spec. Clean as a whistle - I'll have to build an enclosure for this one day!</p><p></p><p><img src="https://i.imgur.com/dYclVyP.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="meshsmith, post: 899909, member: 15646"] My little "Red Book DAC" - a PCM2707 based, low power USB DAC. This is the third iteration of the PCB, with an increasingly optimised component selection and ever-lower noise floor. I think this is where I'll stop for now - the fourth version would be nothing more than shrinking the components and getting the physical size even smaller (that crystal, for instance, is needlessly huge) :) Into 32Ω I'm getting less than 0.01% THD, with a SNR of around 96 dB - very close to datasheet spec. Clean as a whistle - I'll have to build an enclosure for this one day! [IMG]https://i.imgur.com/dYclVyP.jpg[/IMG] [/QUOTE]
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