Description: 1. INMP441 is a MEMS (Micro-Electro-Mechanical Systems) high precision omnidirectional microphone module designed for IoT applications using I2S interface. 2. Features: - Omnidirectional pickup pattern, capturing sound equally from all directions. - Ultra low noise floor (-26dB), ensuring clear and accurate audio recordings. - High sensitivity (50 mV/Pa), enabling excellent signal-to-noise ratio. - Wide frequency response range (18 Hz to 18 kHz). - Compact size (2.7mm x 3.4mm x 0.9mm), suitable for space-constrained IoT devices. - Operating voltage range (1.6V to 5.5V), making it versatile across different platforms. 3. Applications: Suitable for various IoT projects that require high-quality audio recordings, such as smart home systems, environmental monitoring, and voice recognition devices. 4. Benefits: - Provides a more natural and accurate sound representation, enabling better understanding of the environment. - Enhanced background noise rejection, improving
| Specification | Details |
|---|---|
| Specification | Detail |
| Operating Frequency Range | 20 Hz to 1 kHz (flat frequency response) |
| Sensitivity | 44 mV/Pa @ 1 kHz 1000 Ω load |
| Noise Floor Level | -46 dB (A-weighted) 5 V supply voltage |
| Dynamic Range | 106 dB (A-weighted) |
| Signal-to-Noise Ratio (SNR) | 44.8 dBA @ 1 kHz 1000 Ω load |
| Power Consumption | < 4 mA @ 5 V (I2S mode) active high impedance microphone |
| Supply Voltage | 3.3 V to 5 V |
| Package Dimensions | 3.6 x 2.9 mm QFN-12L package |
| Temperature Range | -40 °C to +85 °C (operation) -55 °C to +150 °C (storage) |
| Moisture Sensitivity | 1 (highest level of moisture sensitivity) |
| Compliance | RoHS compliant CE marking |
| Interface | I2S (up to 4 channels) |
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