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InvenSense INMP441 Digital MEMS Microphone

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TDK InvenSense
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 Product Description

INMP441: Omnidirectional Microphone with Bottom Port and I²S Digital Output


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.

INMP441 Functional Block Diagram



  • 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


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