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inmp441 microphone
inmp441 microphone
inmp441 microphone
inmp441 microphone
inmp441 microphone
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inmp441 microphone
inmp441 microphone
inmp441 microphone
inmp441 microphone
inmp441 microphone

INMP441 MEMS Microphone Module- I2S interface

$2.991 pcs

The INMP441 omnidirectional microphone module features a MEMS high-precision and low-power I2S interface that supports ESP32

Dimensions 14 × 14 × 11 mm
Brand

easyelecmodule

1013 in stock

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DESCRIPTION AND FEATURES

Product Introduction

The INMP441 is a high-performance, low-power, digital-output, omnidirectional MEMS microphone with a bottom port. This complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog-to-digital converter, anti-aliasing filter, power management, and an industry-standard 24-bit I²S interface.
 
The I²S interface allows the INMP441 to connect directly to digital processors (such as DSPs and microcontrollers), eliminating the need for an audio codec in the system.
 
With high signal-to-noise ratio (SNR), the INMP441 is an excellent choice for near-field applications. It also features a flat wideband frequency response, resulting in natural, high-clarity sound.

Product Features

NO. FEATURES
1 Digital I²S interface with high-precision 24-bit data
2 High signal-to-noise ratio (SNR) of 61 dBA
3 High sensitivity of -26 dBFS
4 Stable frequency response from 60 Hz to 15 kHz
5 Low power consumption: low current draw of 1.4 mA
6 High PSR (Power Supply Rejection) of -75 dBFS

Interface Definition

PIN DESCRIPTION
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: Microphone outputs signal on the left channel of I²S frame
– When set to high level: Microphone outputs signal on the right channel
SD Serial data output for I²S interface
VCC Input power supply, 1.8V-3.3V
GND Power ground

INMP441 Datasheet

If you want to learn more NMP441 MEMS microphone module details, you can refer to this datasheet.
inmp441 microphone
INMP441 ESP32
SCK >> GPIO14
SD >> GPIO32
WS >> GPIO15
L/R >> GND
GND >> GND
VDD >> VDD3.3

Application

  • Teleconferencing Systems
  • Remote Controls
  • Gaming Consoles
  • Mobile Devices
  • Laptops
  • Tablets
  • Security Systems

FAQ

What's the difference between omnidirectional microphones and unidirectional microphones?

First, note that sound spreads in all directions: when someone speaks, their voice disperses outward through the air, and how far it travels depends on multiple factors.
  1. Unidirectional microphones
     
    Their sound pickup radius is usually very small (30 cm is considered large). They’re designed for single-person use—positioned close to the mouth, they deliver good sound quality because they don’t pick up sounds from farther away. They typically have a gooseneck design (a curved arm that extends to the user’s mouth), focusing only on the user’s voice. Their sensitivity is limited: too high sensitivity would cause sharp feedback (like screeching), which involves compatibility with other devices. There are reasons why manufacturers don’t increase their pickup radius (more on that later).
  2. Omnidirectional microphones
     
    Their sound pickup radius is much larger (ranging from 1 to 5 meters), a huge difference compared to the 10+ cm range of unidirectional mics. They pick up sound from multiple people (5, 8, or even 10+ people) instead of just one. While their sensitivity is high, the large pickup radius also captures more background noise—so their sound quality is usually worse than unidirectional mics (unless good noise reduction is applied).
     
    There’s a clear distinction between devices for group use vs. single-person use. However, omnidirectional mics have a benefit: simpler wiring (no need to set up one per person). They’re ideal for small meetings, ad-hoc meetings, remote discussions, or remote operations.
  3. Key note on functionality
     
    Unidirectional microphones usually support local sound amplification.
     
    Omnidirectional microphones generally do not support local amplification—their high sensitivity would cause severe feedback (screeching) during local playback, which is technically hard to eliminate right now.
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Shipping and Delivery
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Shipping Cost

We only ship to the United States. Shipping costs are calculated based on the total order amount.

Shipping Method And Delivery Time

All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.

Payment:

We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .

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