SiS3923

The SiS3923 is a Top port digital MEMS microphone designed in a SMD compliant package of 4.00mm x 2.00mm x 1.00mm. Composed of a reliable and high performance MEMS acoustic sensor, and an ASIC with analog-to-digital converter and PDM modulator integrated, it offers great acoustic performance with 64dB Signal-to-noise ratio (SNR), a flat wideband frequency response, and -26dBFS sensitivity. In addition, SiS3923 supports multi-operational modes, called normal mode and low power mode selected by clock frequency, suitable for applications demanding different power states vs performance levels.

The digital output interface supports the pulse density modulated (PDM) output for two digital MEMS microphone to be time-multiplexed on a shared bus of single data line using a single clock. In addition, SiS3923 operates from 1.62v to 3.6v and consumes power less than 220uA during low power mode.

  • Digital output Omni-directional microphone
  • Top Port SMD Compliant Package
  • Small form factor: 4.00mm x 2.00mm x 1.00mm
  • Sensitivity: -26 dBFS
  • Signal to Noise Ratio (SNR): 64 dBA (Normal Mode)
  • Operating Voltage and no sensitivity loss across voltage: Max.3.6V
  • Operating current:
    • Normal Mode : 560uA
    • Low Power Mode: 220uA
  • Shielding suppression of EMI