INMP411: High SPL Microphone with Bottom Port and Analog Output

Overview

InvenSense MEMS Microphone

The INMP411 is a high performance, high SPL, low noise, low power, analog output bottom-ported, omnidirectional MEMS microphone. The INMP411 consists of a MEMS microphone element and an impedance converter amplifier. The INMP411 sensitivity specification makes it an excellent choice for both near field and far field applications. The INMP411 is pin-compatible with the INMP401 microphone, providing an easy upgrade path.

The INMP411 has a linear response up to 131 dB SPL. It offers high SNR and extended wideband frequency response resulting in natural sound with high intelligibility. Low current consumption enables long battery life for portable applications.

The INMP411 is available in a miniature 4.72 mm × 3.76 mm × 1.0 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.

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

INMP411 Functional Block Diagram

INMP411 Functional Block Diagram

Applications

  • Fire and safety radios
  • Safety masks
  • Smartphones and feature phones
  • Tablet computers
  • Teleconferencing systems
  • Digital still and video cameras
  • Studio microphones
  • Bluetooth headsets
  • Security and surveillance

Features and Benefits

  • 4.72 mm × 3.76 mm × 1.0 mm surface mount package
  • 131 dB SPL acoustic overload point
  • Sensitivity of −46 dBV
  • ±2 dB sensitivity tolerance
  • Omnidirectional response
  • High SNR of 62 dBA
  • Extended frequency response from 28 Hz to 20 kHz
  • Low current consumption: < 250 µA
  • Single-ended analog output
  • High PSR of −80 dB
  • 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)

INMP411
Analog Bottom 62dB 32dB 28Hz - 20kHz 131dB SPL -46 dBV 2dB 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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