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Analog MEMS Microphone for Clear Audio Capture in Loud and Noisy Environmental Conditions

InvenSense ICS-40638 MEMS Analog Microphone
InvenSense ICS-40638 MEMS Analog Microphone

TDK Corporations have introduced the  InvenSense ICS-40638 MEMS analog microphone suitable for wearable and IoT applications used in outdoor, industrial or harsh environments. The new MEMS Microphone can be operated at a high temperature of 105°C as they have a high dynamic range.


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 x 2.65 mm x 0.98 mm bottom port surface‐mount package.


The ICS-40638 also includes a MEMS microphone element, an impedance converter, and a differential output amplifier along with a tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference. The new device can be the best choice for noise-canceling applications used in a challenging environment.


Features of InvenSense ICS-40638 MEMS Analog Microphone

  • 5 mm x 2.65 mm x 0.98 mm package bottom port surface‐mount package
  • 138 dB AOP SBL
  • 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


Note: More technical information can be found in the datasheet linked at the bottom of this page and on the InvenSense ICS-40638 MEMS analog microphone product page.

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