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Analog Devices introduces industry?s first I2S digital MEMS microphone

Thu, 01/20/2011 - 2:24am
Medical Design Technology

Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications, introduced today the ADMP441 iMEMS® microphone, the industry’s first high-performance MEMS microphone with an I2S (Inter-IC Sound) digital output. The ADMP441 also features an extended frequency response from 100 Hz to 15 kHz, high SNR (signal-to-noise ratio) of 61 dBA, and high PSRR (power-supply-rejection ratio) of 80 dBFS  – features that have become the hallmarks of Analog Devices’ award-winning MEMS microphone portfolio. The new MEMS microphone uses patented ADI MEMS and audio signal processing technologies and is available in a thin 4.72 mm × 3.76 mm × 1.00 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.  To download the datasheet, please visit http://www.analog.com/ADMP441

For years, audio designers have been forced to design in additional signal processing in order to convert microphone output signals into standard I2S formats for non-mobile phone use. This increased both system cost and design complexity,” said Kieran Harney, product line manager, MEMS/Sensors Technology Group, Analog Devices. “The innovative ADMP441 with industry standard I2S output offers plug–and-play use in a small footprint, simplifying audio system design while reducing overall signal chain cost and complexity.  The ADMP441 is ADI’s latest installment in a growing portfolio of high performance MEMS microphones that meet the demand for better sound quality and smaller footprints.”

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