MEMS microphone

16 March 2011 Analogue, Mixed Signal, LSI

Analog Devices introduced a new iMEMS microphone with an I2S (Inter-IC Sound) digital output. The ADMP441 also features an extended frequency response from 100 Hz to 15 kHz, SNR (signal-to-noise ratio) of 61 dBA, and PSRR (power supply rejection ratio) of 80 dBFS.

The device uses patented MEMS and audio signal processing technologies and is available in a thin 4,72 x 3,76 x 1,00 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.

The digital I²S interface with high-precision 24-bit data provides plug-and-play compatibility with industry standard digital interface for non-handset applications. Additionally, the ADMP441 fully complies with the TIA-920 ‘Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones’ standard.

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