The INMP401 is a high quality, low cost, low power analog output bottom-ported omnidirectional MEMS microphone. The INMP401 consists of a MEMS microphone element, an impedance converter, and an output amplifier. The INMP401 sensitivity specification makes it an excellent choice for both near field and far field applications. The INMP401 has a high SNR and flat wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption enables long battery life for portable applications. The INMP401 complies with the TIA-920 standard Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones.

The INMP401 is available in a thin, 4.72 mm × 3.76 mm × 1.0 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The INMP401 is halide free.

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Part # Market Market Status Output Port Location SNR AOP Sensitivity Package Size
UNITS: dBA dB SPL dBV (mm)
N/A NR/ND Analog Bottom 62 120 -42 4.72 x 3.76 x 1


  • 4.72 mm × 3.76 mm × 1.00 mm Surface Mount Package
  • High SNR of 62 dBA
  • Sensitivity -42 dBV
  • Flat Frequency Response from 100 Hz to 15 kHz
  • Low Current Consumption < 250 μA
  • Single-Ended Analog Output
  • High PSRR of 70 dB
  • Compatible with Sn/Pb and Pb-Free Solder Processes
  • RoHS/WEEE Compliant