Analog Devices intros industry’s first I2S digital MEMS microphone

NORWOOD, USA: Analog Devices Inc. (ADI) has introduced 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 × 3.76 × 1.00mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.

“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.”