GY-SPH0645LM4H MEMS Digital Microphone Sound Sensor Module with I2S Interface for Arduino, ESP32 & Raspberry Pi

The GY-SPH0645LM4H MEMS Microphone Digital Sound Sensor Module is a compact, low-power digital sound sensor featuring the SPH0645LM4H MEMS microphone with an I2S digital audio interface. Unlike traditional analog microphone modules, this GY-SPH0645LM4H Microphone Module outputs high-quality digital audio directly, making it ideal for voice recognition, sound detection, audio recording, smart assistants, AI applications, and IoT projects.

Designed for seamless integration with popular development boards such as ESP32, Raspberry Pi, STM32, Arduino (with I2S support), ESP8266, and other microcontrollers, the module delivers excellent sound quality with low noise and high sensitivity.

Its digital I2S MEMS Digital Microphone Module eliminates analog signal interference, making it an excellent choice for embedded audio applications requiring reliable and high-fidelity sound capture.

Whether you’re building a voice-controlled robot, smart speaker, digital audio recorder, machine learning project, or home automation system, the GY-SPH0645LM4H provides accurate and dependable audio acquisition.

Features:

• Original SPH0645LM4H MEMS digital microphone
• Standard I2S digital audio output interface
• High signal-to-noise ratio (SNR) for clear audio capture
• Omnidirectional MEMS microphone
• Low power consumption suitable for battery-powered devices
• Compact PCB design for embedded applications
• Supports real-time digital audio acquisition
• Excellent immunity to analog noise and interference
• Compatible with ESP32, Raspberry Pi, STM32, Arduino (I2S supported), and other development boards
• Ideal for AI voice projects, speech recognition, smart home devices, IoT, robotics, and audio recording

Specifications:

• Product Model: GY-SPH0645LM4H
• Microphone Type: MEMS Digital Microphone
• Microphone IC: SPH0645LM4H
• Output Interface: I2S Digital Audio
• Directionality: Omnidirectional
• Operating Voltage: 3.3V DC
• Current Consumption: Low Power Operation
• Frequency Response: 100Hz – 10kHz (Typical)
• Signal-to-Noise Ratio (SNR): 65 dB (Typical)
• Sensitivity: -26 dBFS (Typical)
• Communication Interface: I2S
• Logic Level: 3.3V
• Mounting: Through-hole Header Pins

Applications:

• Voice Recognition Systems
• Smart Speakers
• AI & Machine Learning Projects
• IoT Devices
• Audio Recording
• Sound Monitoring
• Home Automation
• Robotics
• Speech Detection
• Embedded Audio Systems

Package Includes:

• 1 × GY-SPH0645LM4H MEMS Microphone Digital Sound Sensor Module