Knowles Acoustics Rolls Out SiSonic Digital MEMS SMD Microphones

9/20/2005 - Knowles Acoustics has announced its new "Digital" series of SiSonicTM SMD microphones. This represents the worlds first “Digital” surface mount microphone based on Knowles industry proven MEMS microphone technology. With availability in multiple package sizes, the device is ideally suited for applications where component density is at an absolute premium – such as Mobile Phones, Digital Still Cameras, and MP3 Players. Engineering samples are available today, with mass production scheduled for Q1, 2006.

Compared to the “Analog” SiSonic microphone, the “Digital” SiSonic is a Pulse Density Modulation (PDM) device, has an integrated sleep mode, and is compatible with stereo input applications. This microphone simplifies the design process in multiple portable electronics devices. The design of the Digital SiSonic incorporates the same patented MEMS technology utilized across the expanding SiSonic product range. Therefore, it can be assembled using standard automatic pick-n-place equipment, conforms to lead-free requirements, and is compatible with typical industry Pb-free solder profiles (260°C reflow for 30 seconds maximum).

“With over three successful years of high volume production and more than 100 customers currently using our standard “analog” MEMS microphones, the SiSonic product portfolio continues its expansion. As the leader in MEMS microphones, Knowles is reaching new levels of integration in microphone technology with the introduction of the “Digital” series,” said Jeffrey Niew, Vice President and General Manager.

SiSonic is available with a standard supply voltage range of 1.6 to 2.9V, has maximum current consumption of 500uA, is compatible with high temperature reflow, and is rated to operate up to 100° C.

About Knowles Acoustics
Knowles Acoustics is a division of Knowles Electronics LLC, the world leader in microacoustic technology for the Hearing Health Industry. Leveraging the company's heritage of 50 plus years supplying acoustic expertise to this market, Knowles Acoustics has applied this capability to new markets and customers. Knowles is a leading supplier of acoustic interface solutions, specifically surface mount microphones, subminiature transducers, and speech enhancement software. For more information call 1-630-250-5935.

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