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Mono audio codec targets VoIP phones

San Jose, Calif.—Nuvoton Technology Corp. announced the first device in its line of emPowerAudio products.

The WAU8812 is a high-performance, low-cost mono audio codec designed for VoIP phones, hands-free kits and general-purpose speakerphones. The WAU8812 features a high-fidelity, 24-bit signal architecture delivering 93dB D/A converter signal to noise ratio (SNR) and 91dB A/D converter SNR at audio sampling rates from 8KHz to 48KHz. The device operates at 6-µA standby current, which reduces power consumption and extends battery life in hand-held applications.

The codec reduces external component requirements by integrating a speaker driver, headset driver and a configurable low-noise, microphone-biasing circuit. It also includes two microphone inputs, a single auxiliary input and two dedicated analog outputs. The digital filter block includes a soft mute and a notch filter to reduce out-of-band noise. The WAU8812's speaker and mono outputs have a dedicated supply of 2.5 to 5.5 volts, which enable increased output power as required. Industry-standard digital interfaces include I²S and PCM with programmable time slot assignments. In addition, the codec is AEC-Q100-compliant for automotive applications.

The WAU8812 is available in a 28-SSOP and a 32-QFN (5mmx5mm) package. The 32-QFN package supports read/write capability via SPI, 2-Wire.

Pricing: The packaged part is priced below $1 in quantities of 25,000.
Availability: Samples and evaluation boards are available today.
Datasheet: Click here.

Nuvoton Technology Corp., www.nuvoton.com

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