The SiS3970 is a Bottom Port digital MEMS microphone designed in a SMD compliant package of 4.00mm x 3.00mm x 1.05mm. Composed of a reliable and high performance MEMS acoustic sensor, and an ASIC with analog-to-digital converter, digital filter and power management integrated, it offers great acoustic performance with 64dB Signal-to-noise ratio (SNR), a flat wideband frequency response, and -20dBFS sensitivity.

The digital output interface supports the industry standard 24-bit TDM interface capable of supporting up to 16 of SiS3970 Digital Microphones and allows connecting directly to DSP and SOC processor without additional audio codec. In addition, SiS3970 operates up to 3.6v and consumes power less than 650uA.