Unit Mini PDM is a digital MEMS silicon-based microphone based on the PDM (Pulse Density Modulation) signal. The microphone features a high signal-to-noise ratio, high sensitivity, low power consumption, strong resistance to RF interference, and a smooth frequency response. It automatically switches the microphone state (power-off / active / sleep) according to the clock frequency, making it suitable for audio data collection in wearable devices and smart digital products.