The ICS-41351 is a multi-mode, low noise digital MEMS microphone in a small package. The ICS-41351 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 ICS-41351 has multiple modes of operation: Low Power (AlwaysOn), Standard and Sleep. The ICS-41351 has high SNR and 120 dB SPL AOP in all operational modes.

The ICS-41351 is available in a standard 3.5 × 2.65 × 0.98 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
Production PDM Top 65 120 -26 3.5 × 2.65 × 0.98 50


  • 3.5 × 2.65 × 0.98 mm surface-mount package
  • Extended frequency response from 50 Hz to >20 kHz
  • Low power: 230 μA in Low-Power Mode
  • Sleep Mode: 12 μA
  • High power supply rejection (PSR): −93 dB FS
  • Fourth-order Σ-Δ modulator
  • Digital pulse density modulation (PDM) output
  • Compatible with Sn/Pb and Pb-free solder processes
  • RoHS/WEEE compliant