---
product_id: 386208445
title: "Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "138.40 DT"
currency: TND
in_stock: true
reviews_count: 6
category: "Adafruit"
url: https://www.desertcart.tn/products/386208445-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: TN
region: Tunisia
---

# Compact 7.6x5.1x2.5 cm size Purely digital I2S output 50Hz-15kHz frequency range Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** 138.40 DT
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game with the tiniest digital mic that packs a punch!

## Quick Answers

- **What is this?** Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit
- **How much does it cost?** 138.40 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/386208445-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421)

## Best For

- adafruit enthusiasts

## Why This Product

- Trusted adafruit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ultra-Compact Design:** Tiny footprint (7.6 x 5.1 x 2.5 cm) fits effortlessly into any project, saving space without sacrificing quality.
- • **Future-Ready MEMS Tech:** Bottom-ported MEMS microphone delivers reliable, durable performance for cutting-edge audio applications.
- • **Seamless I2S Integration:** Plug-and-play digital output optimized for Cortex M-series and single-board computers—no analog hassle.
- • **Crystal-Clear Digital Audio:** Experience pristine sound capture with a 50Hz to 15kHz frequency range, perfect for professional-grade recordings.
- • **Low Noise, High Sensitivity:** With 15dB audible noise and 94dB sensitivity, capture every nuance with minimal background interference.

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, bottom-ported digital microphone designed for seamless integration with single-board computers and Cortex M-series chips. Operating across a 50Hz to 15kHz frequency range, it delivers clear, low-noise audio with a purely digital I2S output, making it ideal for professional audio recording, voice recognition, and embedded sound projects.

## Description

Listen to this good news - we now have a breakout board for a super tiny I2S MEMS microphone. Just like 'classic' electret microphones, MEMS mics can detect sound and convert it to voltage, but they're way smaller and thinner. This microphone doesn't even have analog out, its purely digital. The I2S is a small, low cost MEMS mic with a range of about 50Hz - 15KHz, good for just about all general audio recording/detection.

Review: Defected - Item defected - could not test and return.
Review: Working as expected - The microphones works as expected

## Features

- small, low cost MEMS mic with a range of about 50Hz - 15KHz
- there are three digital pins
- The microphone is a single mono element
- This I2S MEMS microphone is bottom ported
- MEMS mics can detect sound and convert it to voltage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XNL2GBW |
| Antenna Location | Voice Recording, Video Recording, Video Conference |
| Audible Noise | 15 Decibels |
| Audio Sensitivity | 94 Decibels |
| Best Sellers Rank | #53,955 in Computers ( See Top 100 in Computers ) #776 in Single-Board Computers |
| Brand | Adafruit |
| Built-In Media | Microphone |
| Color | Blue |
| Compatible Devices | Personal Computer |
| Connectivity Technology | I2S |
| Connector Type | XLR |
| Customer Reviews | 4.4 out of 5 stars 67 Reviews |
| Enclosure Material | Plastic, Resin |
| Frequency Range | 50 hz 15 khz |
| Frequency Response | 15 KHz |
| Hardware Platform | PC |
| Impedance | 16 Ohms |
| Item Dimensions | 7.6 x 5.1 x 2.5 centimeters |
| Item Weight | 5 Grams |
| Manufacturer | Adafruit |
| Maximum Frequency | 15 KHz |
| Mfr Part Number | 3421 |
| Microphone Form Factor | Mini |
| Model Name | Adafruit I2S MEMS Microphone Breakout |
| Model Number | 3421 |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Channels | 1 |
| Number of Packs | 1 |
| Polar Pattern | Unidirectional |
| Power Source | Corded Electric |
| Signal-to-Noise Ratio | 15 dB |
| Special Feature | Purely digital with a digital output, optimized for Cortex M-series chips and single-board computers |
| UPC | 717520031291 604776613404 |

## Product Details

- **Brand:** Adafruit
- **Connectivity technology:** I2S
- **Connector type:** XLR
- **Model name:** Adafruit I2S MEMS Microphone Breakout
- **Recommended uses for product:** Voice Recording, Video Recording, Video Conference

## Images

![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 1](https://m.media-amazon.com/images/I/611Bn5t945L.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 2](https://m.media-amazon.com/images/I/81ONZNcOfGL.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 3](https://m.media-amazon.com/images/I/818LqHHMruL.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 4](https://m.media-amazon.com/images/I/81Ed5T04XTL.jpg)

## Customer Reviews

### ⭐ Defected
*by B***L on 13 June 2026*

Item defected - could not test and return.

### ⭐⭐⭐⭐⭐ Working as expected
*by J***. on 6 April 2026*

The microphones works as expected

### ⭐⭐⭐⭐⭐ It did not come in the package
*by A***W on 15 April 2026*

Originally shipped package without the product. They rectified immediately great product.

## Frequently Bought Together

- Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)
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**Shop now:** [https://www.desertcart.tn/products/386208445-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421](https://www.desertcart.tn/products/386208445-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-23*