TDK Introduces Lowest Pulse Density Modulation Multi-Mode MEMS Microphone With Acoustic Activity Detect

InvenSense, a TDK Group company, announced a comprehensive portfolio of new technology solutions during the 2021 Consumer Electronics Showcase. Among the expanded MEMS portfolio, the new T5838 SmartSound MEMS microphone offers a low power mode of just 130uAmps and a high-quality mode of 330uAmps, while supporting a dynamic range of 68dN SNR and 133dB AOP at 20kHz bandwidth. Optimized for smartphones, microphone arrays, smart speakers, and headsets, the T5838 supports configurable wake-on-sound at power levels as low as 20 µA.

Among the many interesting demonstrations of new audio solutions for developers presented by TDK at CES 2020, the T5808 MIPI standard SoundWire microphone stands out as a "world's first," using the MIPI Alliance SoundWire compliant digital interface which allows bi-directional data flow. The T5808 is a multi-mode, low noise digital MEMS microphone in a small package, consisting of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator.

Maxim Integrated Products announced new MAX98357 and MAX98358 compact and cos-effective audio amplifiers, ideal for a wide variety of applications, including a plug-and-play solution for portable and smart speakers. Despite their ultra-small form factors, the MAX98357 and MAX98358 digital-input 3.2W Class D audio power amplifiers require only a single power supply and auto configure for 35 different clocking configurations and 128 digital audio formats.