MEMS microphones

17 February 2010 Analogue, Mixed Signal, LSI

STMicroelectronics has expanded its portfolio with next-generation micro-machined acoustic devices. The innovative MEMS microphones that use sensor technology from Omron target high sound quality, reliability and cost-effectiveness for existing and emerging audio applications across a range of market segments.

MEMS microphones have recently emerged to compete with the traditional electret condenser microphones (ECM). Leveraging established high-volume silicon manufacturing processes, micro-machined acoustic devices meet price points set by electret microphones, while boasting superior reliability and robustness. Importantly, MEMS microphones can be made smaller than the most compact ECMs and are less susceptible to mechanical vibration, temperature variations and electromagnetic interference.

ST’s new MEMS microphones offer additional features such as noise suppression and directional voice pickup, useful to determine and filter out irrelevant noise. These features can be realised by incorporating multiple MEMS microphones in one device. Such microphone arrays improve noise cancellation and are now made possible with the packaging technology used for ST’s digital MEMS microphones.

For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za

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