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No algorithm experience? No problem–TI audio codec with miniDSP does it for you

With a goal of enabling portable design manufacturers to develop cost-efficient, high performance, and feature-rich audio solutions complete with power savings, Texas Instruments just unveiled the TLV320AIC3254–a highly integrated codec. The device is claimed by the company to be the lowest-power 1.8V codec featuring an integrated miniDSP in production today.

Two key challenges are targeted with the codec–improving audio quality and extending battery life.

By using its PowerTune technology, TI allows for the optimization of power based on the performance user demands, without sacrificing audio quality. Power consumption can be optimized under any usage model, trading off between ultra low-power operation and signal-to-noise ratio (SNR) for better audio quality. Designers concerned with power consumption can tune their system to consume as little as 2.4 mW in stereo playback when performance is programmed to the 90-dB SNR level. Those trying to maximize performance can achieve 100-dB SNR at 5.1 mW in stereo playback. The codec complements TI's existing portable audio portfolio of speaker amplifiers, power management and low-power processors including the DM3x, OMAP35x and OMAP-L1.

The miniDSP allows for the addition of software and the programming of the codec, differentiating products. As with any programmable device, the interface should be simple, and TI's PurePath Development Studio toolkit environment helps reduce design complexity and time-to-market.

The highly programmable miniDSP audio processing engine, allows users to run complex algorithms on the device while freeing MIPS on the primary processor. Leveraging TI's new codec and its 192-kHz sample rate, customers can add the most comprehensive suite of advanced digital signal processing capabilities to improve audio performance, including 20-band stereo graphic equalizer, multi-band dynamic range compression, custom FIR and IIR filtering, and 3-D processing, without in-house algorithm expertise.

Designers can leverage the PurePath Studio development toolset and TI's library of advanced algorithms to compile, configure and load their application into the integrated miniDSP engines in an intuitive, drag-and-drop graphical environment, simplifying design complexity.

The TLV320AIC3254 is available in a space-saving 5 mm x 5 mm QFN-32 package from TI and its authorized distributors. The device is priced at $5.45 in 1000-piece quantities. Advanced audio algorithms are also available today.

For manufacturers seeking an ultra low-power audio codec without integrated miniDSP functionality, the pin-compatible TLV320AIC3204 is available for $3.45 in 1000-piece quantities. Samples, EVMs and software for both devices are available at www.ti.com/tlv320aic3254 TI.

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