M5Stack PDM MEMS Microphone Unit

The M5Stack Mini PDM Unit is a compact digital MEMS microphone module with PDM output, offering high sensitivity, low power consumption, and strong RF interference resistance for audio capture in wearable and smart device applications. The M5Stack Mini PDM Unit is a digital MEMS silicon microphone based on PDM (Pulse Density Modulation) signals. It features high signal-to-noise ratio, high sensitivity, low power consumption, strong RF interference immunity, and smooth frequency response. The microphone automatically switches states (power-off/active/sleep) according to the clock frequency, making it suitable for audio data acquisition in wearable devices and smart digital devices. Features

* PDM signal output (CLK/DAT) * High sensitivity and high signal-to-noise ratio * Low power consumption * Strong RF interference immunity * LEGO-compatible Specifications Digital Mic SPM1423 Sensitivity 94dB SPL@1KHz Typical: -22dBFS SNR 94dB SPL@1KHz, A-weighted Typical: 61.4dB THD 100dB SPL@1KHz Typical: 1% Operating Current 600µA Enclosure Material Plastic (PC) Product Size 24.0 x 24.0 x 13.0mm Product Weight 4.0g Resources

* Product documentation Package Contents

* 1x M5Stack PDM MEMS Microphone Unit (SPM1423) * 1x HY2.0-4P Grove Cable (5cm)