M5Stack PDM MEMS Microphone Unit (SPM1423)

Description M5Stack PDM MEMS Microphone Unit (SPM1423) Offers high signal to noise ratio Features anti-radio frequency interference Low Power Consumption Lets you PDM encoding output (CLK/DAT) LEGO Compatible The M5Stack PDM MEMS Microphone Unit (SPM1423) is a digital MEMS silicon-based microphone based on PDM (Pulse Density Modulation) signal. It automatically switches the microphone state according to the clock frequency (power down/activate/sleep) and can be widely used for audio data collection on wearable devices and smart digital devices. Applications Spectrum Analyzer Recorder Loudness meter View more What's Included 1 x PDM mini Unit 1 x HY2.0 4P Cable (5 cm) Dimensions Size 24 x 24 x 13 mm Specifications Sensitivity: 94 dB SPL at 1 kHz Nom.: -22 dBFS Signal to Noise Ratio: 94 dB SPL at 1 kHz, A-weighted Nom.: 61.4 dB Total Harmonic Distortion: 100 dB SPL at 1 kHz Nom.:1% Working voltage range: 1.6 to 3.6 V Working Current: 600 µA Weight: 4 g Case Material: Plastic (PC)