Monthly Archives: October 2011

PCB routing techniques for ADCs

Posted on October 29, 2011 by Stephen Trier

PCB layout is fun, especially when you are trying to eke the best performance out of a component.  Last week, I finished the PCB layout for the AK5388 analog-to-digital converter (ADC) I chose for my digital ham radio transceiver project. … Continue reading →

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PCB layout for the AK5388 ADC breakout board

Posted on October 27, 2011 by Stephen Trier

I had some time to myself this weekend and was able to get the AK5388 breakout board routed. The board carries an AKM AK5388 audio DAC, which has 24-bit output and up to a 123 dB signal-to-noise ratio. My plan … Continue reading →

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gedasymbols.org is a great part of using gEDA

Posted on October 15, 2011 by Stephen Trier

I’ve joined up as a contributor to  gedasymbols.org. This great resource, run by DJ Delorie, hosts schematic symbols for gschem and footprints for gEDA’s layout software, PCB. A search engine helps locate symbols and footprints, and gedasymbols includes links to … Continue reading →

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Cleveland has had wind gusts of over 50 miles per hour (80 km/h) today, and my antenna is still up. Hopefully that bodes well for the coming winter.

Posted on October 15, 2011 by Stephen Trier | Comments Off

AK5388 audio ADC breakout board design

Posted on October 9, 2011 by Stephen Trier

A few weeks ago, I picked the AKM Semiconductor AK5388 as the analog-to-digital converter for my receiver design. This high-performance audio DAC has a 24-bit output with up to 123 dB signal-to-noise ratio (A-weighted).  I hope that the narrower bandwidths … Continue reading →

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It’s antenna time!

Posted on October 3, 2011 by Stephen Trier

For years, I’ve been a ham without an antenna. My excuse, while I worked in academia, was that I could use the university club station any time, but in truth, I’ve always been the kind of ham who goes through … Continue reading →

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