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Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit I2S MEMS Microphone Breakout - ICS-43434 **Type:** Product page · **SKU:** ADA6049 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-i2s-mems-microphone-breakout-ics43434.html ([markdown](https://core-electronics.com.au/adafruit-i2s-mems-microphone-breakout-ics43434.html.md)) Listen to this good news - we now have a breakout board for a super tiny ICS43434 I2S MEMS microphone. Just like 'classic' electret microphones,... ## Pricing - **Price:** $15.22 (inc GST) — $13.84 AUD, exc GST - **Quantity discounts:** 10+ $13.31 (exc GST) · 50+ $12.81 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 10 today, and up to 500 more in 8–12 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA6049:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA6049:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Listen to this good news - Adafruit now have a breakout board for a super tiny **ICS43434** **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, it's purely digital. The I2S is a small, low-cost MEMS mic with a range of about 50Hz - 15KHz, good for all general audio recording/detection. The chip has a built in low-pass filter that cuts frequencies above 24KHz. For many microcontrollers, [adding audio input is easy with one of Adafruit's analog microphone breakouts](https://core-electronics.com.au/electret-microphone-amplifier-max4466-with-adjustable-gain.html). But as you get to bigger and better microcontrollers and microcomputers, you'll find that you don't always have an analog input, or maybe you want to avoid the noise that can seep in with an analog mic system. Once you get past 8-bit micros, you will often find an **I2S** peripheral that can take *digital audio data* in! That's where this **I2S Microphone Breakout** featuring the **TDK ICS43434** comes in. Instead of an analog output, there are three digital pins: Clock, Data, and Left-Right (Word Select) Clock. When connected to your microcontroller/computer, the 'I2S Controller' will drive the clock and word-select pins at a high frequency and read out the data from the microphone. No analog conversion required! The microphone is a single mono element. You can select whether you want it on the Left or Right channel by connecting the Select pin to power or ground. If you need stereo, pick up two microphones! You can set them up to be stereo by sharing the Clock, WS, and Data lines but having one with Select to ground, and one with Select to high voltage. No firmware or driver configuration is required, you'll get 24-bit output instantly. This I2S MEMS microphone is bottom ported, so make sure you have the hole in the bottom facing out towards the sounds you want to read. It's a 1.6-3.6V max device only, so it is not for use with 5V logic (it's really unlikely you'd have a 5V-logic device with I2S anyway). Many beginner microcontroller boards *don't* have I2S, so ensure it's a supported interface before you try to wire it up! This microphone is best used with Cortex M-series chips like the SAMD21 or SAMD51, ESP32, RP2040 or RP2350, or single-board computers like the Raspberry Pi. **[For code, libraries, wiring examples, CAD files, Fritzing, and more, check out the guide!](https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/)** ## Technical Details - Sensitivity: -26 dB FS ±1dB - SNR High Performance Mode: 65 dBA SNR Low Power Mode: 64 dBA - Current Draw High Performance Mode: 490 µA Current Draw Low Power Mode: 230 µA - Microphone Acoustic Overload Point (AOP) 120 dB SPL - Sample Rate High Performance Mode: 23 ~ 51.6 kHz Sample Rate Low Power Mode: 6.25 ~ 18.75 kHz - [Datasheet](https://core-electronics.com.au/attachments/localcontent/6049_DS-000069-ICS-43434-v1_113258194c7.pdf) ![RoHS 2 2011 65 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2011_65_EU_7356c5574c.svg)![RoHS 2 2015 863 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2015_863_EU_86773f57f9.svg) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/A/D/ADA6049-1.jpg)