ICS-41350 Digital Multi-Mode Microphone TDK InvenSense ICS-41350 Digital Multi-Mode Microphone is a low-power, low-noise digital MEMS microphone in a small package. The ICS-41350 has an extended ultrasonic response up to 40kHz with high SNR. It also features 126dB SPL AOP in high-performance mode and 120dB SPL AOP in standard and low-power modes. TDK ICS-41350 Digital Multi-Mode Microphone is ideal for smartphones, tablets, cameras, and BLUETOOTH® headset applications.