INMP441: Omnidirectional Microphone with Bottom Port and I²S Digital Output

Overview

InvenSense MEMS Microphone

The INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with a bottom port. The complete INMP441 solution consists of a MEMS sensor, signal conditioning, an analog-to-digital converter, antialiasing filters, power management, and an industry standard 24-bit I²S inter-face. The I²S interface allows the INMP441 to connect directly to digital processors, such as DSPs and microcontrollers, with-out the need for an audio codec in the system.

The INMP441 has a high SNR and high sensitivity, making it an excellent choice for far field applications. The INMP441 has a flat wideband frequency response, resulting in natural sound with high intelligibility.

The INMP441 is available in a thin 4.72 mm × 3.76 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The INMP441 is halide free.

† – 7” Tape and reel to be discontinued. Contact sales@invensense.com for availability.

INMP441 Functional Block Diagram

INMP441 Functional Block Diagram

Applications

  • Teleconferencing systems
  • Gaming consoles
  • Mobile devices
  • Laptops
  • Tablets
  • Security systems
  • Remote controls

Features and Benefits

  • Digital I²S interface with high precision 24-bit data
  • High SNR of 61 dBA
  • High Sensitivity of -26 dBFS
  • Flat frequency response from 60 Hz to 15 kHz
  • Low current consumption of 1.4 mA
  • High PSR of −75 dBFS
  • Small 4.72 mm × 3.76 mm × 1 mm surface-mount package
  • Compatible with Sn/Pb and Pb-free solder processes
  • RoHS/WEEE Compliant

References

Application Notes (General)

Application Notes (Specific)

Evaluation Board User Guides

Whitepapers

Part # Output Port Location SNR Equivalent
Input Noise
Frequency Response
Maximum SPL Sensitivity @1kHz Sensitivity Tol Package Size Documentation Flex Board Evaluation Board Device
UNITS: (dBA) (dBA) (min - max) +/- dB mm (.pdf) (add to cart) (add to cart) (add to cart)

INMP441
I²S Bottom 61dB 33dB 60Hz - 15kHz 120dB SPL -26 dBFS 3dB 4.72x3.76x1.00 Datasheet

  • Disclaimer


    • InvenSense sensors should not be used or sold in the development, storing, production and utilization of any conventional or mass-destructive weapons or any other weapons or life-threatening applications as well as in any other life-critical applications including but not limited to medical equipment, transportation, aerospace and nuclear instruments, undersea equipment, power plant equipment, disaster prevention and crime prevention equipment. In devices or systems whereby malfunction of these products can be expected to result in personal injury and casualties, InvenSense customers using or selling these products do so at their own risk and agree to keep InvenSense harmless from any consequences. InvenSense reserves the right to make changes to this product, including its circuits and software, in order to improve its design and/or performance, without prior notice. InvenSense makes no warranty, either expressed or implied with respect to any product, and specifically disclaims all other warranties, including warranties for merchantability, non-infringement, and fitness for any particular purpose. For more information go to Terms and Conditions.

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