The INMP404 is a high quality, low cost, low power, analog output bottom-ported omnidirectional MEMS microphone. The INMP404 consists of a MEMS microphone element, an impedance converter, and an output amplifier. The INMP404 sensitivity specification makes it an excellent choice for both near field and far field applications. The INMP404 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 INMP404 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard.

The INMP404 is available in an ultra-miniature 3.35 mm × 2.50 mm × 0.88 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The INMP404 is halide free.

Recommended Products

Part # Market Market Status Output Port Location SNR AOP Sensitivity Package Size
UNITS: dBA dB SPL dBV (mm)
General Audio NR/ND Analog Bottom 62 120 -38 3.35 x 2.5 x 0.88


  • Tiny 3.35 mm × 2.50 mm × 0.88 mm Surface-Mount Package
  • High SNR of 62 dBA
  • High Sensitivity of −38 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