ICS-40212 Analog Microphone TDK InvenSense ICS-40212 Analog Microphone is a Micro Electro Mechanical Sensor (MEMS) microphone with very high dynamic range and a low-power AlwaysOn mode. This microphone incorporates a MEMS microphone element, an impedance converter, and an output amplifier. The ICS-40212 features a low-power mode that is active when the supply voltage is <,2V and operates with 55µA.