Product Name: High Precision Low Power MEMS Microphone Board
Working Voltage: 3.3V
Features:
- Efficient Power & Stability: Operating at just 1.4 mA current consumption with a high PSR of -75 dBFS, the microphone maintains reliable performance with low noise interference across varying voltage conditions.
- Advanced MEMS Microphone Solution: The INMP441 is a low-power omnidirectional MEMS microphone with digital output and a bottom port configuration. This complete system in a package integrates a MEMS sensor, signal conditioning, ADC, anti-aliasing filter, power management, and a standard 24-bit I2S interface. This kit includes 5 INMP441 modules, 1 40-pin female to female jumper, and 10 3-pin headers.
- Broad Application Compatibility: The pre-assembled module comes with all necessary components populated, enabling easy prototyping and integration into end products like conference systems, smart home devices, and IoT applications. Suitable for teleconferencing equipment, gaming peripherals, portable electronics, laptops, and security systems, providing consistent audio performance in diverse usage environments.
- Optimized Acoustic Performance: With a high 61 dBA signal to noise ratio and flat frequency response from 60 Hz to 15 kHz, this microphone captures natural sounding audio with high definition, supporting accurate near-field recording.
- Direct Digital Connectivity: The built-in 24-bit IIS interface allows seamless connection to digital signal processors(DSPs) and microcontroller, eliminating the need for external audio codec and reducing system complexity.
- Core Chip: INMP441
- Interface Type: Digital IIS Interface
- Data Bit Depth: 24-bit
- Directionality: Omnidirectional
- Signal-to-Noise Ratio (SNR): 61 dBA
- Sensitivity: -26 dBFS
- Frequency Response: 60 Hz - 15 kHz
- Supply Voltage: 3.3V (typical)
- Operating Current: 1.4 mA
Interface Introduction:
- SCK: Serial Data Clock for I2S Interface
- WS: Serial Data Word Select for I2S Interface
- L/R: Left/Right Channel Selection
- When set to low level, the microphone outputs signals on the left channel of the I2S frame
- When set to high level, the microphone outputs signals on the right channel
- SD: Serial Data Output for I2S Interface
- VCC: Power Supply +, 1.8V to 3.3V
- GND: Power Ground
INMP441 connect to ESP32:
- SCK connect to GPIO14
- SD connect to GPIO32
- WS connect to GPIO15
- L/R connect to GND
- GND connect to GND
- VDD connect to VDD3.3
Place of Application: - Professional Audio Recording: High definition voice recorders, external microphones for camcorders., - Voice Interaction Devices: Smart speakers, voice assistants, AIoT equipment., - Remote Communication: Video conferencing systems, USB conference microphones, smart office devices., - Embedded Development: Adds audio input to microcontroller projects (e.g., support Arduino ESP32) for voice recognition, voiceprint identification, environmental sound monitoring, etc., - Security and Surveillance: High-definition audio recording in security monitoring systems.
Package Including:
5 x INMP441 Omnidirectional Microphone Module
1 x 40 Pin Female to Female Jumper
10 x 3-Pin Male Header
The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.
