EstarDyn Omnidirectional Microphone Module I2S Interface INMP441 MEMS High Precision Low Power Ultra small volume for ESP32

Description

EstarDyn Omnidirectional Microphone Module – the ultimate audio solution for ESP32-based projects. This ultra‑compact MEMS microphone harnesses the high‑precision INMP441 chipset and delivers crystal‑clear sound with minimal power consumption. Perfect for voice‑controlled IoT devices, smart speakers, and wearable gadgets that demand low latency and high fidelity.

Key Features

• High‑precision INMP441 MEMS sensor with 94 dB SNR and 85 dB dynamic range
• Integrated I2S interface for seamless digital audio transfer to ESP32
• Ultra‑small footprint – 9 mm × 9 mm, ideal for space‑constrained designs
• Low power consumption: 0.4 mA in normal operation, 0.1 mA in standby
• Built‑in low‑noise amplifier and automatic gain control for consistent audio quality
• Wide frequency response (20 Hz–20 kHz) suitable for voice, music, and sensor applications
• Robust packaging with PCB mounting pads for quick prototyping

Technical Specifications

• Model: INMP441 MEMS Microphone
• Interface: I2S (Digital), 3‑wire SPI optional
• Operating Voltage: 1.8 V – 3.3 V
• Operating Current: 0.4 mA (normal), 0.1 mA (standby)
• Output: 24‑bit I2S audio stream
• Temperature Range: –40 °C to +85 °C
• Dimensions: 9 mm × 9 mm × 1.6 mm
• Mounting: 0.8 mm pitch PCB pads

Applications

• Voice‑activated assistants and smart home controllers
• Wearable health monitors and fitness trackers
• Industrial IoT sensors and machine‑vision systems
• Portable audio recorders and microphones for drones
• Hands‑free communication devices and automotive infotainment

Why EstarDyn?

With a proven track record in delivering high‑performance MEMS solutions, EstarDyn provides a microphone module that is not only compact and energy‑efficient but also easy to integrate. The I2S interface eliminates the need for additional ADC hardware, reducing board complexity and cost. Whether you’re building a next‑generation smart speaker or a low‑power voice‑activated sensor, this module offers reliable, high‑quality audio capture in a form factor that fits anywhere.