ICS-40618 High Dynamic Range Microphone TDK InvenSense ICS‐40618 is an analog MEMS microphone with a very high dynamic range and a low‐power AlwaysOn mode. The ICS‐40618 includes a MEMS microphone element, an impedance converter, and a differential output amplifier. The component has an operating temperature range of -40°C to +85°C. This microphone features a low‐power mode, which is active when the supply voltage is <,2.0V. In this mode, the ICS‐40618 operates with 55μA. Other low-power specifications include 129dB SPL acoustic overload point and a tight ±1dB sensitivity tolerance.