---
product_id: 733879806
title: "Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "C$24"
currency: NIO
in_stock: false
url: https://www.desertcart.ni/products/733879806-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: NI
region: Nicaragua
---

# Ultra-compact 7.6 x 5.1 x 2.5 cm form factor Low voltage operation 1.6-3.6V for energy efficiency I2S digital interface for crystal-clear audio Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** C$24
**Availability:** ❌ Out of 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?** C$24 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/733879806-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-Slim Design:** Compact and lightweight (5g) to fit effortlessly into sleek, space-conscious builds.
- • **Power-Smart Performance:** Operates on low logic voltage (1.6-3.6V), perfect for modern microcontrollers without draining your battery.
- • **Precision Audio Capture:** 50Hz to 15kHz frequency range delivers crisp, professional-grade sound detection.
- • **Seamless I2S Integration:** Plug-and-play with Arduino Zero, Feather M0, Raspberry Pi & more for next-level audio projects.
- • **Customizable Stereo Setup:** Mono mic with selectable left/right channel; combine two for true stereo sound mastery.

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, ultra-thin digital microphone designed for I2S-compatible microcontrollers like Arduino Zero and Raspberry Pi. It captures high-fidelity audio within a 50Hz-15kHz range, supports selectable mono channel output with stereo capability via dual mics, and operates efficiently at low voltages (1.6-3.6V). Ideal for professional-grade audio projects demanding precision and minimal footprint.

## Description

Hear this good news - we now have a breakout board for the ultra-small I2S MEMS microphone. Similar to the "Classic" electret microphone, the MEMS microphone can detect sound and convert it to voltage, but it is smaller and thinner. No analog output, pure digital microphone. I2S is a small, low-cost MEMS microphone, suitable for almost all common audio recording/detection at a range of about 50Hz - 15KHz. Microphone is a single mono element. By connecting the Select pin to the power or ground, you can choose whether to place it on the left or right channel. If you need a stereo, get two microphones. You can set it to stereo by sharing Clock, WS and Data lines, but select to Earth, and Select to high Voltage. This I2S MEMS microphone has a port on the bottom, make sure there is a hole at the bottom for the sound you want to read. For devices up to 1.6-3.6V only. Do not use with 5V logic (there is very few 5V logic devices with I2S) Many beginners microcontroller boards do not have I2S, please check the supported interface before connecting. This microphone is best for use with Cortex M-series chips such as Arduino Zero, Feather M0, and single board computers like Raspberry Pi

## Features

- Ultra-small I2S MEMS microphone for use with I2S compatible microcontroller (Arduino Zero, Feather M0, Raspberry Pi, etc.)
- 50Hz - 15kHz range
- I2S digital interface: Clock, data, left and right (word selected) clock
- Microphone is a single mono element. You can choose which channel to be left or right by connecting the select pin to the power or ground. If you need a stereo, please choose two microphones. You can set it to stereo by sharing the clock, WS, data lines, but one choice for the ground, the other for high voltage
- Maximum logic level 1.6-3.6V Do not use with 5V logic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Audio Sensitivity | 94 Decibels |
| Item Weight | 5 Grams |
| Impedance | 16 Ohms |
| Microphone Form Factor | Mini |
| Item dimensions L x W x H | 7.6 x 5.1 x 2.5 cm |
| Power Source | Corded Electric |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Material | Plastic |
| Signal-to-Noise Ratio | 15 dB |
| Hardware Platform | PC |
| Number of Channels | 1 |
| Frequency Response | 15 KHz |
| Manufacturer | Adafruit |
| UPC | 717520031291 604776613404 |
| Color Name | blue |
| Batteries Included | No |
| Batteries Required | No |
| Item Model Number | 3421 |
| Special Features | Volume Control |
| Product Dimensions | 7.62 x 5.08 x 2.54 cm; 5 g |

## Product Details

- **Recommended Uses For Product:** Voice recording, video recording, video conference
- **Brand:** Adafruit
- **Model Name:** Adafruit I2S MEMS Microphone Breakout
- **Connectivity Technology:** XLR
- **Connector Type:** XLR
- **Special Feature:** Volume Control
- **Compatible Devices:** Personal Computer
- **Color:** blue
- **Included Components:** Microphone
- **Polar Pattern:** Unidirectional

## 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)

## Frequently Bought Together

- Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)
- Adafruit Mini Metal Speaker w/Wires - 8 ohm 0.5W [ADA1890]
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-26*