Digital high sensitivity XENSIV™ MEMS microphone enabling high quality audio capturing for laptop & tablet applications Infineon's high-performance digital XENSIV™ MEMS microphone, IM70D122, uses Sealed Dual Membrane (SDM) technology to achieve a 70 dB(A) signal-to-noise ratio. With high sensitivity and SNR, it's perfect for advanced audio capturing that enhances the audio experience for laptops and tablets. SDM MEMS technology provides high IP57 ingress protection.