TDK announces ultra-high AOP Analog MEMS microphone, ICS-40638

TDK ICS-40638

TDK Corporation introduces the InvenSense ICS-40638 MEMS analog microphone. The ICS-40638 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 × 2.65 mm × 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.

TDK - ICS-40638

The new 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 cancelling applications in challenging environments.

The InvenSense ICS-40638 part and the ICS-40638 evaluation board (EVB) are now available from multiple distributors worldwide.

Analog Output MEMS Microphone Flex Evaluation Board
Analog Output MEMS Microphone Flex Evaluation Board.

Main applications

  • Wearables
  • IoT devices
  • Automotive
  • Still/Video Cameras

Key features

  • 5 mm × 2.65 mm × 0.98 mm package bottom port surface‐mount package
  • 138 dB AOP SPL
  • 63 dB SNR
  • Differential analog output
  • –43 dBV sensitivity (differential)
  • ±1 dB sensitivity tolerance
  • Extended frequency response from 35 Hz to 20 kHz
  • Enhanced RF immunity
  • –81 dB PSRR
  • Compatible with Sn/Pb and Pb free solder processes
  • RoHS/WEEE compliant

1-4 Layer PCBs $2

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