SmartSound™ T5848 I²S Microphones

TDK Corporation announces worldwide distribution of its InvenSense SmartSound T5848 I^²S microphones to enable intelligent keyword, voice command, and sound detection at ultra-low power. Together with the InvenSense SmartSound T5838, the T5848 I^²S microphone supports edge and generative AI systems with its innovative Acoustic Activity Detect (AAD) feature, making them ideal for IoT applications including smart-watches and TWS earbuds.

In high-quality mode, the T5848 and T5838 deliver 68 dBA SNR and 133 AOP, providing excellent sound fidelity to ensure accurate keyword detection even in noisy environments while only consuming a minuscule 330 µA at 1.8 V. They consume only 130 µA in always-on low-power mode, prolonging the battery life of always-on systems.

T5848 and T5838 can be programmed to listen for acoustic activity indicating keywords or voice commands, allowing the application's processor to efficiently manage power consumption during idle periods. This enables IoT and edge AI devices to remain in an always-on state, ready to respond to user interactions without draining the battery.

T5848 supports the I^²S interface, which saves components in the system. It also reduces processing requirements such as filtering the microphone output in the system hardware or software.

The exceptional SNR of the T5848 ensures AI systems receive high-quality input, even in noisy surroundings where keywords or voice commands must be distinguished from irrelevant background noise. Such high-quality input improves the accuracy and reliability of response required for next-generation AI systems.