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Audio codec delivers always-on power consumption

14 Mar 2014

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Dialog Semiconductor announced the release of a low power audio codec, DA7212, with always-on power consumption to enable 'voice trigger' activated applications.

The DA7212 audio codec has low power consumption (650µW) which can extend the battery life of portable devices—including new wearables such as smart watches and connected fitness devices—in an 'always-on' mode, enabling constant tracking and instant recognition of voice commands. It also integrates an enhanced hybrid Automatic Level Control (ALC) that offers faster reaction times and finer gain resolution to maintain a consistent audio quality level when recording.

The DA7212 is a 24bit audio codec that supports digital or analogue MEMS microphones and offers a number of DSP features including ALC, 5 band EQ and noise gate. It has an integrated beep generator for DTMF keypad tone generation and a speaker amplifier that can drive up to 1.2W. The advanced start-up controller has been designed to offer seamless audio transitions, silent volume ramping and highly effective pop and click suppression. It comes in a 34 bump WLCSP package that has a novel, staggered ball-out conducive for cost effective PCB manufacturing.

The DA7212 is offered in a package with a 0.5mm pitch and an operating temperature range of -40°C to +85°C. Dialog's new DA7212 audio codec is now available for the Arduino Development Platform as a new peripheral module delivering Hi-Fi sound quality at lower power levels. This audio module (ARD-AUDIO-DA7212) can be downloaded from the Dialog website.




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