TDK SmartSound™ T5838/T5837 MEMS Microphones and SmartSound One Development Platform Now Available

PublishTime： 2023-06-02 Article Source：TDK InvenSense News

T5838 and T5837 PDM microphones offer 68dBA SNR consuming only 130µA in always-on mode and 330µA in high-performance mode.

SmartSound One provides a plug-and-play evaluation interface for Digital I²S and PDM and Analog MEMS Microphones.

TDK Corporation announces the availability of the InvenSense T5838 and T5837 MEMS microphones, and the SmartSound One Development Platform. These MEMS microphones push the boundaries of microphone acoustic performance, power efficiency, and advanced feature sets all in small package footprints. SmartSound One offers a solder-free, plug-and-play interface to evaluate and develop multiple types and configurations of microphones.

The T5837 and T5838 PDM MEMS Microphones offer the world’s lowest power Pulse Density Modulation (PDM) multi-mode MEMS microphone with a high acoustic overload point (AOP) of 133dB SPL, high signal-to-noise ratio (SNR) 68dBA, and wide dynamic range ideal for environments that shift from very quiet to very loud, such as far-field voice pickup for the smart speaker to ANC TWS applications.

T5837, a very low power wide dynamic range PDM digital microphone with industry-standard features:

Multiple modes of operation such as high quality, low-power (Always On), ultrasonic, and sleep mode

High-quality mode offers an SNR of 68 dBA while only consuming 310µA of supply current at 1.8V

Low-power (Always On) mode offers an SNR of 65.5dBA while only consuming 120µA of supply current at 1.8V

Targeted to smartphones, TWS earbuds, tablets, cameras, Bluetooth headsets, smart speakers, notebook PCs, and the security and surveillance market

T5838, a very low power wide dynamic range PDM digital microphone with new acoustic activity detect (AAD) features:

Industry-leading acoustic performance, modes of operations, and low current draw as seen on the T5837

Acoustic activity detection (AAD), is a new ultra-low power edge processing feature where the microphone monitors the acoustic environment and when activity is detected, can wake up the main SoC or application processor out of a deep power-down mode. This can maximize system battery life. The AAD is available with three modes of operation starting at just 20µA, providing user programmability for various filters and thresholds to optimize performance for each application

Targeted to smartphones, TWS earbuds, tablets, cameras, Bluetooth headsets, smart speakers, notebook PCs, security and surveillance markets, high-end voice-activated remote controls, and voice-activated equipment

T5838 and T5837 are available in small 3.5×2.65×0.98mm bottom port packaging.

SmartSound One is a USB plug-and-play microphone interface module that enables rapid evaluation and development of TDK Analog and Digital MEMS microphone solutions. Users can plug in up to two microphones to transmit high-quality stereo audio using standard audio packets over the USB connection and can capture this audio using their favorite software for later playback or detailed real-time analysis.

The SmartSound One is compatible with PDM digital, I²S digital, single-ended analog, and differential analog TDK microphones supplied on a flexible PCB.

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