Description
Technical Specifications
- Model: INMP441
- Microphone Type: MEMS Omnidirectional Digital Microphone
- Interface: I2S (Inter-IC Sound)
- Supply Voltage: 1.8V – 3.3V
- Current Consumption: < 1 mA
- Signal-to-Noise Ratio (SNR): 61 dB
- Frequency Response: 60 Hz – 15 kHz
- Output Format: 24-bit I2S
- Directionality: Omnidirectional
- Maximum SPL: 120 dB
- Clock:
- Master Clock (MCLK): Not required
- Supported: BCLK, LRCLK
- Compatibility: ESP32, Raspberry Pi, STM32, Arduino (with I2S support)
- Operating Temperature: -40°C to +85°C
- Applications:
- Voice recognition systems
- AI assistants & smart speakers
- Audio recording & streaming
- DSP & FFT sound analysis
- Environmental noise monitoring
- IoT sound-based projects
- Wake-word detection
Technical Description
The INMP441 MEMS Digital Microphone Module is a high-precision, low-noise, omnidirectional microphone designed for audio capturing, voice recognition, sound detection, and DSP applications. Featuring an I2S digital interface, it provides crystal-clear audio output without the need for an ADC, making it an excellent choice for microcontrollers like ESP32, Raspberry Pi, ARM Cortex boards, and IoT devices.
With a compact MEMS design, ultra-low power consumption, and an excellent signal-to-noise ratio (SNR), the INMP441 is ideal for AI voice projects, smart speakers, audio analysis, DIY sound recording devices, and environmental monitoring.
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