The ICS-40181 is an analog MEMS microphone with high SNR and enhanced RF immunity. The ICS-40181 includes a MEMS microphone element, an impedance converter, and an output amplifier.

Other high-performance specification include a linear response up to 124 dB SPL, tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference.

This microphone’s electro-acoustic performance matches the bottom port ICS-40180, making this pair of microphones suitable to use together in applications requiring both top and bottom port devices.

The ICS-40181 is available in a small 3.5 mm × 2.65 mm × 0.98 mm surface-mount package.


Product Details

Part # Market Status Output Port Location SNR AOP Sensitivity Package Size LF Cutoff
UNITS: dBA dB SPL dBV (mm) Hz
Production Analog Top 65 124 -38 3.5 × 2.65 × 0.98 60

Documentation & Resources


  • High 65 dBA SNR
  • −38 dBV Sensitivity
  • ±1 dB Sensitivity Tolerance
  • Non-Inverted Signal Output
  • Extended Frequency Response from 60 Hz to 20 kHz
  • Enhanced RF Immunity
  • 124 dB SPL Acoustic Overload Point
  • Low Current Consumption: 190 μA
  • Single-Ended Analog Output
  • High −78 dBV PSR
  • 3.5 × 2.65 × 0.98 mm Surface-Mount Package
  • Compatible with Sn/Pb and Pb-Free Solder Processes
  • RoHS/WEEE Compliant

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