RF-Hardened, Low-Noise Microphone with Top Port and Analog Output

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Lead Time 26 weeks
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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.

• Smartphones
• Tablet Computers
• Wearable Devices
• Still and Video Cameras
• Bluetooth Headsets
• Notebook PCs
• Security and Surveillance

Symmetry Electronics is an authorized InvenSense distributor.


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High 65 dBA SNR
-38 dBV Sensitivity
1 dB Sensitivity Tolerance
Noninverted Signal Output
Omnidirectional Response
Extended Frequency Response from 60Hz to 20kHz
Enhanced RF Immunity
124 dB SPL Acoustic Overload Point
Low Current Consumption of 180A
Single-Ended Analog Output
High -78 dBV PSR
3.5 2.65 0.98mm Surface-Mount Package
Compatible with Sn/Pb and Pb-Free Solder Processes
RoHS/WEEE Compliant


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InvenSense Datasheet

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