TDK

Brand launches microphone for totally adverse environments

Microelectromechanical systems are actively developing the field of microphone production. The production of microphones in the form of MEMS chips seems cheap, and the technical and quality characteristics are gradually increasing the level of high-quality analog products. For example, TDK's new MEMS microphones can operate in extremely noisy environments, with high ambient temperatures, providing high quality recording over a wide dynamic range.
TDK presented and started experimental shipments of ICS-40638 analog MEMS microphones in a 3.5 x 2.65 x 0.98 mm SMD package. It is a microphone for wearable electronic devices and items with an Internet connection.
It operates silently up to 105°C and has a very high acoustic overload point (AOP). Without overload (distortion), the microphone can record audio at a sound pressure level of 138 dB, which is well above the pain threshold. The declared signal-to-noise ratio is at the 63 dB level.
The ICS-40638 microphone includes a MEMS microphone element, an acoustic transducer and a differential output amplifier. Other features include ± 1 dB tolerance sensitivity and enhanced RFI immunity. The product is ideal for noise cancellation in difficult environments, such as when recording in a room at concerts by musical artists.

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