ICS-40618

High SNR Microphone with Differential Output and Low Power Mode

High SNR Microphone with Differential Output and Low Power Mode The TDK Invensense 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.