This module mainly adopts an ICS-43432 digital microphone chip, which is a high-performance and low-noise MEMS microphone with a bottom microphone hole. It is equipped with an internal MEMS sensor, Σ-Δ ADC, anti-aliasing filter, power manager and interfaces conforming to the I2S standard, and it can directly output 24-bit digital audio signals. Besides, two positioning holes are reserved on it with a diameter of 4.8mm, which is convenient for fixing it on other devices.
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