The INMP441 is a high-performance omnidirectional MEMS microphone module built for developers who need clean, accurate digital audio capture in their embedded projects. Unlike analog microphone modules that require an external ADC and are prone to electrical noise, the INMP441 integrates a MEMS sensor, signal conditioning circuitry, an analog-to-digital converter, and anti-aliasing filters into a single compact package, outputting audio directly over the industry-standard I2S digital interface. This makes wiring simpler and results in noticeably cleaner recordings, especially in noisy environments.
Its low-noise, high sensitivity design makes it an excellent choice for voice recognition, sound level monitoring, audio recording, and smart home listening applications. The module pairs particularly well with microcontrollers that support hardware I2S, such as the ESP32 and Raspberry Pi, making it a favorite among hobbyists building voice assistants, audio loggers, and IoT sound-sensing devices. Its low current draw also suits battery-powered and portable projects. With a simple six-pin breadboard-friendly layout, integration into existing prototypes is quick and hassle-free.
Specification:
- Chip : INMP441
- Interface : I2S digital, 24-bit
- Supply Voltage : 1.8V to 3.3V
- Sensitivity : -26 dBFS
- Signal-to-Noise Ratio : 61 dBA
- Frequency Response : 60Hz to 15kHz
- Average Current Consumption : ~1.4mA
- Directionality : Omnidirectional
- PCB Dimensions : 14mm x 14mm