Lowest-power 1.8-V audio codec embeds miniDSP

Lowest-power 1.8-V audio codec embeds miniDSP

Part boosts audio performance, extends battery life, and reduces cost and design complexity for portable device manufacturers

Claimed to offer the lowest power in the industry, the 1.8-V TLV320AIC3254 audio codec combines the company’s PowerTune technology — reducing power consumption to 2.4 mW — and integrates two programmable miniDSP audio-processing engines, which allows users to run complex algorithms on the device while freeing MIPS on the primary processor. The codec can cover operations from 8-kHz mono voice playback to audio stereo 192-kHz DAC playback.

The part includes dual integrated LDOs, which provide additional power supply rejection and extend device capability to operate single-supply up to 3.6 V. With an integrated stereo headphone amplifier, dual-microphone programmable-gain amplifiers, a fractional PLL, and an analog input multiplexer, the codec simplifies board design dramatically and reduces final system component count and cost.

SNR for the stereo audio DAC is 100 dB and for the stereo audio ADC 93 dB. Available in a 32-pin QFN package, the part also provides digital microphone support, stereo headphone outputs, and stereo line outputs. ($5.45 ea/1,000 — available now.)

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