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Dialog rolls out audio codec for always on apps

Posted: 14 Mar 2014  Print Version  Bookmark and Share

Keywords:Dialog Semiconductor  audio codec  smart watch  always-on 

Dialog Semiconductor plc has unleashed a low power audio codec that the company says offers efficient always-on power consumption to enable voice trigger activated applications. The DA7212 audio codec boasts 650uW always-on power consumption.

According to Dialog, the device can extend the battery life of portable devices including 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 company added.

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, Dialog continued.

The DA7212 is offered in a 34 bump WLCSP package with a 0.5mm pitch and an operating temperature range of -40°C to 85°C. The audio codec is available for the Arduino Development Platform as a 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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