MEMS microphones for active noise cancellation are 1.8 x 2.8mm

CUI Devices has announced two MEMS microphones designed for active noise cancellation.

CMM-2718AB-3815NC-TR (right) and CMM-2718AT-3817NC-TR (left) are omni-directional analogue microphones with bottom or top sonic ports, respectively.

“Thanks to their flat frequency response from 20 to 10,000Hz, signal-to-noise ratios of 62 or 64dBA and acoustic overload points of 123 or 128dBspl, these microphones are ideal for use in active noise cancelling microphone arrays,” claimed the company, adding that sensitivity is -38dB ±1dB.

Consumption can be 150µA, and and operation is over -30 to 85°C.

The packages are ~2.8 x 1.8 x 0.9mm (or 1mm high, depending on package). They are also reflow soldering compatible, but there are restrictions on washing, local airflow and other handling precautions so check the data sheets.

Product pages, from which datasheets are linked:
CMM-2718AB-3815NC-TR
CMM-2718AT-3817NC-TR

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Steve Bush

Steve Bush is the long-standing technology editor for Electronics Weekly, covering electronics developments for more than 25 years. He has a particular interest in the Power and Embedded areas of the industry. He also writes for the Engineer In Wonderland blog, covering 3D printing, CNC machines and miscellaneous other engineering matters.