Knowles Acoustics Announces MEMS Based SMD Microphone

MUNICH, Germany - Knowles Acoustics has announced its new "Mini" series of SiSonic™ silicon microphones. With a footprint of less than 18mm2, the device is 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 with mass production scheduled for Q2, 2005.

Compared to the standard SiSonic microphone (6.15 x 3.76 x 1.45-mm), the Mini SiSonic measures 4.72 x 3.76 x 1.50-mm.  The design of the Mini incorporates the same patented MEMS technology utilized across the expanding SiSonic product range.  Therefore, it can be assembled using 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).

The Mini SiSonic is available in four models - Standard Omnidirectional (with or without integrated EMI/RFI protection) specified to a nominal sensitivity of -42dB and an Integrated Amplified version (with or without integrated EMI/RFI protection) specified to a nominal sensitivity of -22dB.

SiSonic is available with a standard supply voltage range of 1.5 to 5V, and is rated to operate up to 100°C.