ON Semiconductor’s BelaSigna R281 Enables Voice Activation in Portable Devices

Mixed-Signal SoC sets new standards for ultra-low-power, always-listening voice trigger

PHOENIX — (BUSINESS WIRE) — September 30, 2015 — ON Semiconductor (Nasdaq: ON), driving energy efficiency innovations, has introduced BelaSigna® R281, a new “always listening” voice trigger System-on-Chip (SoC) solution designed for popular consumer electronics devices such as smartphones, tablets and wearable devices. Using an audio pattern-matching algorithm developed by ON Semiconductor, BelaSigna R281 can detect a single, user-trained trigger phrase. This phrase can be any series of sounds, and is neither speech nor language dependent. Upon recognizing this trigger phrase, BelaSigna R281 will assert a wake-up signal which, when connected to a host controller, alleviates the need for users to touch their device to wake it prior to use.

Based on ultra-low-power technology developed for the advanced hearing aid solutions that the company is already well-known for, BelaSigna R281 has virtually no impact on standby battery life. Unlike some standalone solutions which are only compatible with digital microphones, BelaSigna R281’s mixed-signal architecture works with both analog and digital microphone signals. The device provides a configurable, regulated microphone supply to facilitate simple integration. Other key features of BelaSigna R281 include an I2C interface for configuration and control, a configurable GPIO wake-up signal, and an internal oscillator.

BelaSigna R281 is available in a 5 mm x 5 mm QFN32 package and will soon also be available in an ultra-miniature 2.42 mm x 2.74 mm WLCSP. Both packages can be designed onto a single-sided PCB with 4 mil routing and a minimal amount of external components, providing one of the simplest solutions available for always-on, always-listening voice trigger.

“As the popularity of portable and wearable electronics devices has continued to grow, so has the demand for true hands-free operation,” said Michel De Mey, Senior Director, ON Semiconductor. “BelaSigna R281 supports voice triggered wake-up without placing unacceptable demands in terms of power, space, design-in complexity, and cost.”

About ON Semiconductor

ON Semiconductor (Nasdaq:  ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company is a leading supplier of semiconductor-based solutions, offering a comprehensive portfolio of energy efficient power and signal management, logic, standard and custom devices. The company’s products help engineers solve their unique design challenges in  automotive, communications, computing, consumer, industrial, medical and military/aerospace applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions. For more information, visit  http://www.onsemi.com.

ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its Web site in this news release, such information on the Web site is not to be incorporated herein.



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