M5Stack PDM Microphone Unit SPM1423 Pulse Density Modulation Signal Automatic Voice Recording Module Programmable Module

Description
PDM mini Unit is a digital MEMS silicon-based microphone based on PDM (Pulse Density Modulation) signal. The microphone has high signal-to-noise ratio, high sensitivity, low power consumption, anti-radio frequency interference, smooth frequency response and other characteristics. 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.
Features
– I2S PORT,PDM encoding output (CLK/DAT)
– High sensitivity, high signal to noise ratio
– Low power consumption
– Anti-radio frequency interference
– Compatible with LEGO
Package Included
– 1x PDM mini Unit
– 1x HY2.0 4P Cable(5CM)
Applications
– Spectrum Analyzer
– Recoder
– Loudness meter
Specification
Resources:Parameter
Sensitivity:94dB SPL@1KHz Nom.:-22dBFS
Signal to Noise Ratio:94dB SPL@1KHz,A-weighted Nom.:61.4dB
Total Harmonic Distortion:100dB SPL@1KHz Nom.:1%
Working voltage range:1.6 V to 3.6 V
Working Current:600┢A
Net Weight:4g
Gross Weight:8g
Product Size:24*24*13mm
Package Size:35*36*18mm
Case material:Plastic(PC)
Related Link
SPM1423
EasyLoader:Click to download
EasyLoader is a concise and fast program writer, which has a built-in program related to the product. It can be burned to the main control by simple steps to perform a series of function verification. Please install the corresponding driver according to the device type. M5Core host Please to view the CP210X driver installation tutorial, M5StickC/V/T/ATOM series can be used without driver)
Schematic:to open
Example
1. Arduin IDE
Please to download Arduin Code