SPH0645 I2S MEMS Microphone Breakout Module for Raspberry Pi
SPH0645 I2S MEMS Microphone Breakout Module for Raspberry Pi
SPH0645 I2S MEMS Microphone Breakout Board – Digital Audio for Raspberry Pi & Prototyping
Capture crisp, high-quality digital audio in your electronics projects with the SPH0645LM4H I2S MEMS Microphone Breakout Module. Compact, low-voltage, and fully compatible with Raspberry Pi, Cortex-M series microcontrollers, and other I2S-capable single-board computers, this sensor board is the ideal choice for makers, hobbyists, and engineers.
Made in Mainland China.
Key Features
- I2S Digital Output: Clean digital audio signal — no analog noise or ADC conversion required
- Selectable Channel: Easily configure as left or right channel by connecting the Select pin to power or ground
- Stereo-Ready: Pair two modules sharing the same clock, WS, and data lines for stereo audio capture
- Low Voltage Operation: Works at 1.6–3.6V — perfectly matched to modern 3.3V microcontrollers and single-board computers
- Bottom-Port Microphone: Sound port on the underside — orient the board so the sound source faces the bottom for optimal pickup
- Compact Form Factor: Small 17 × 13mm PCB fits easily into tight enclosures and breadboard setups
- Compatible with Raspberry Pi, Feather M0, Arduino Zero, and other Cortex-M series boards
Specifications
| Microphone Chip | SPH0645LM4H |
| Interface | I2S (Inter-IC Sound) |
| Operating Voltage | 1.6V – 3.6V |
| Channel Configuration | Mono (Left or Right selectable) |
| PCB Size | 17 × 13mm |
| Material | Plastic + Metal |
| Package Contents | 1 × SPH0645 Breakout Module Set |
| Origin | Mainland China |
What's in the Box
- 1 × SPH0645 I2S MEMS Microphone Breakout Board
Important Notes
- This module operates at a maximum of 3.6V — not compatible with 5V logic. Always verify your microcontroller's I2S interface and voltage levels before connecting.
- Many entry-level microcontroller boards do not support I2S. Confirm I2S compatibility before purchasing.
- For stereo setups, two modules are required. One is set to left channel, the other to right channel.
- Slight color differences from product images may occur due to monitor brightness and lighting conditions.
- Minor measurement deviations (±1mm) may apply.
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Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Is the SPH0645 I2S MEMS microphone module compatible with Raspberry Pi?
A: Yes! The SPH0645 breakout module is specifically designed for use with Raspberry Pi (all common models), as well as Cortex-M series microcontrollers like the Feather M0 and Arduino Zero. Simply ensure your board has an I2S interface and operates at 3.3V logic.
Q: Can I use two of these modules together for stereo audio recording?
A: Absolutely. To capture stereo audio, purchase two SPH0645 modules. Share the clock, WS, and data lines between them, then configure one as the left channel and one as the right channel using the Select pin. This gives you a true stereo digital audio input.
Q: Does this module work with 5V Arduino boards?
A: No — the SPH0645 has a maximum operating voltage of 3.6V and is not compatible with 5V logic systems. It is best suited to 3.3V boards with native I2S support. Standard 5V Arduino boards typically lack I2S support anyway, so this module is best paired with 3.3V I2S-capable platforms.