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App note: Common audio inter-IC protocols

Posted on Sunday, August 12th, 2012 in app notes by DP

Here is a design article from EETimes about the common inter-IC audio protocols. The article covers the traditional audio signal chain, fully digital audio signal chains, I2S protocol, and PDM.

As audio integrated-circuit (IC) designs move to finer geometries, it becomes more difficult to design, and less cost-effective to integrate, high-performance analog circuits on the same piece of silicon with high-density digital circuits. Audio system architects are pushing analog portions of an audio signal chain further towards the input and output transducers and connecting everything in between digitally.

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One Response to “App note: Common audio inter-IC protocols”

  1. Squonk says:

    Interesting article, I didn’t know that PDM is now used in cell phone designs…

    A curious coincidence is that PDM is precisely the way animal nervous systems represent sensory and other information.

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