T5919

T5828

T5837

T5838

T5848

SmartSound One

T3903

T5808

T5818

ICM-52000

ICS-41350

ICS-40212

T4086

ICS-40638

ICS-40800

T4076

ICS-40740

ICS-40214

ICS-40618

ICS-40720

ICS-40730

ICS-40619

ICS-40310

INMP510

T3902

ICS-43434

ICS-41351

ICS-43432

INMP621

INMP521

INMP522

ICS-40300

ICS-40216

The INMP621 is a high sound pressure level (SPL), ultra-low noise, low power, digital output, bottom ported omnidirectional MEMS microphone. This microphone clips at 133 dB SPL, which is useful for clearly capturing audio in loud environments. The INMP621 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The digital interface allows the pulse density modulated (PDM) output of two microphones to be time multiplexed on a single data line using a single clock. The INMP621 is pin compatible with the INMP421 and INMP521 microphones, providing an easy upgrade path.

The INMP621 has a high SNR of 65 dBA and sensitivity of −46 dBFS. The INMP621 has an extended wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption, and a sleep mode with less than 5.5 µA of current consumption, enable long battery life for portable applications.

The INMP621 is available in a thin 4 mm × 3 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.


Product Details

Part # Market Status Output Port Location SNR AOP Sensitivity Package Size LF Cutoff
UNITS: dBA dB SPL dbfs (mm) Hz

Not Recommended for New Designs

Part # Market Status Output Port Location SNR AOP Sensitivity Package Size LF Cutoff
UNITS: dBA dB SPL dbfs (mm) Hz
INMP621
INMP621
NR/ND PDM Bottom 65 133 -46 3 x 4 x 1 45

Documentation & Resources

Features

  • 133 dB SPL Acoustic Overload Point
  • Small and Thin 4 mm × 3 mm × 1 mm Surface-Mount Package
  • Omnidirectional Response
  • Very High SNR: 65 dBA
  • Sensitivity of −46 dBFS
  • Extended Frequency Response from 45 Hz to >20 kHz
  • Low Current Consumption: 1.2 mA
  • Sleep Mode for Extended Battery Life, 5.5 µA Consumption
  • High Power Supply Rejection (PSR): −100 dBFS
  • Fourth-Order Σ-Δ Modulator
  • Digital Pulse Density Modulation (PDM) Output
  • Compatible with Sn/Pb and Pb-Free Solder Processes
  • RoHS/WEEE Compliant

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