The ICS-40618 is an analog MEMS microphone with very high SNR and a low-power AlwaysOn mode. The ICS-40618 includes a MEMS microphone element, an impedance converter, and a differential output amplifier.

This microphone features a low-power mode, which is activated when the supply voltage is <2.0 V. In this mode, the ICS-40618 operates with 55 µA.

Other high-performance specifications include 132 dB SPL acoustic overload point in high performance mode, tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference.

The ICS-40618’s electro-acoustic performance matches the top port ICS-40619, making this pair of microphones suitable to use together in applications requiring both top and bottom port devices.

The ICS-40618 is available in a small 3.50 mm × 2.65 mm × 0.98 mm bottom port surface-mount package.


Product Details

Part # Market Status Output Port Location SNR AOP Sensitivity Package Size LF Cutoff
UNITS: dBA dB SPL dBV (mm) Hz
ICS-40618
ICS-40618
Production Analog Bottom 67 132 -38 3.5 x 2.65 x 0.98 50

Documentation & Resources

Features

  • Differential non-inverting analog output
  • −38 dBV sensitivity (differential)
  • ±1 dB sensitivity tolerance
  • Extended frequency response from 50 Hz to 20 kHz
  • Enhanced RF immunity
  • −85 dB PSRR
  • 3.5 × 2.65 × 0.98 mm surface-mount package
  • Compatible with Sn/Pb and Pb-free solder processes
  • RoHS/WEEE compliant

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