ICS-40638 Ultra-High AOP Analog MEMS Microphone

TDK InvenSense’s ICS-40638 MEMS analog microphone offers an ultra-high acoustic overload point (AOP) of 138 dB sound pressure level (SPL), exceptionally efficient 170 µA low power operation, and high signal-to-noise ratio (SNR) of 63 dB in a small 3.5 mm x 2.65 mm x 0.98 mm bottom port surface‐mount package. The analog MEMS microphone is equipped with high dynamic range, operates up to +105°C, and is designed for IoT and consumer devices.

The ICS-40638 microphone is ideal for wearable and IoT applications, particularly in outdoor, industrial, or harsh environments where high temperature and high acoustic overload points present system design challenges. The ICS-40638 includes a MEMS microphone element, an impedance converter, and a differential output amplifier. Other high‐performance specifications include a tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference. The part is ideal for noise-canceling applications in challenging environments.