Delta Sigma DAC article

Sep 28, 2012 9 Replies
C

Hi All, Ok, going crazy (short trip, I know...)



A few months ago, I saw an article that included information on delta sigma DACs, inlcuding some code the author had written, I belive for an 8051, to implement one in software. So, now that I finally want to try it out, I can't find it anywhere. Anyone know what magazine or have a link to that article? I thought it was in EDN, but can't find it searching their site



Or if someone has a link to some sample C code for a D/S DAC that I could examine, I would appreciate it. Just trying to get my head around the practice as opposed to the theory...



Thanks, Charlie


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J

I receive EDN as a PDF. I have at least a year's worth still saved. No such article found, so maybe another magazine? ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
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C

Must have been. Embedded? It definitely wasn't Circuit Cellar... :-(

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G

The April 2012 issue of Circuit Cellar has a good article on sigma-delta modulators (ADCs & DACs). No code but a bunch of references.

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T

Here's the one I wrote. The code's generic, but it may work on an 8051.

Do keep in mind that the code is written for clarity, not efficiency: it always scares me a bit when someone just uses my code without thinking.

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Tim Wescott Control system and signal processing consulting www.wescottdesign.com
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G

The April 2012 issue of Circuit Cellar has a good article on sigma-delta modulators (ADCs & DACs). No code but a bunch of references.

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G

or

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for the long URI impaired ;)

Grant.

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J

It was Circuit Cellar (April 2012 page 42). I actually implemented the design on a ATtiny2313.

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C

So it was! I should have a copy or two around here (see page 28)

8-)

Charlie

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C

Ok, I remember this now. Actually, the article I was looking at, I first saw in December or January and thought it might be interesting. Then, I saw Robert's article in CC and thogut I should try it someday. The day has come, and I can't find the original article... ;-)

Charlie

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