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Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

Product number: ADA3006

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Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

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Product information "Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A"

Listen to this good news - we now have an all-in-one digital audio amp breakout board that works incredibly well with the Raspberry Pi! If you're looking for a simple and inexpensive way to make your digital audio files sound great, then the MAX98357 I2S Amp Breakout is for you. It takes the standard I2S digital audio input and not only decodes it into an analogue signal, but also amplifies it directly into a speaker. Perfect for adding a compact, amplified sound as it combines 2 breakouts (I2S DAC + Amp) in one.

I2S (not to be confused with I2C) is a digital sound protocol used on circuit boards to pass audio data. Many high-end chips and processors manage all audio in digital I2S format. Three or four pins are then used to input or output data (data input, data output, bit clock and left-right channel selection). Normally, audio devices have a DAC chip that takes the I2S input signal and converts it into an analogue signal that can drive headphones.

This small mono amplifier is amazingly powerful - it can deliver 3.2 watts of power to a speaker with 4 ohms impedance (5V power at 10% THD). Inside the miniature chip is a Class D controller that can be operated from 2.7V-5.5VDC. Because it is a Class D amplifier, it is incredibly efficient - making it perfect for portable and battery-powered projects. It has built-in thermal and overcurrent protection, but we hardly noticed it getting hot.

The audio input is I2S standard, you can use 3.3V or 5V logic data. The outputs are "bridge tied" - that is, they are connected directly to the outputs, no connection to ground. The output is a ~300KHz square wave PWM which is then "averaged out" by the speaker coil - the high frequencies are not heard. All this means that you cannot connect the output to another amplifier, it should drive the speakers directly.

There is a gain pin that can be manipulated to change the gain. By default, the amplifier provides a gain of 9 dB. By connecting a pull-up or pull-down resistor or by direct wiring, the gain pin can be set to 3dB, 6dB, 9dB, 12dB or 15dB.

The ShutDown/Mode pin can be used to put the chip into shutdown or to set which I2S audio channel is routed to the speaker. By default, the amplifier outputs an (L+R)/2 stereo mix to the mono output. By adding a resistor, you can change it to output only the left or only the right output

Works great with Raspberry Pi, Arduino Zero and any other microcontroller or microcomputer with I2S audio outputs

Specs:

Output power: 3.2W at 4Ω, 10% THD, 1.8W at 8Ω, 10% THD, with 5V supply
PSRR: 77 dB typ @ 1KHz
I2S sampling rates from 8kHz to 96kHz
No MCLK required
Click and pop suppression
Five pin-selectable gains: 3dB, 6dB, 9dB, 12dB, 15dB
Excellent click and pop suppression
Thermal switch-off protection

Supplied as an assembled and tested breakout board, with a small piece of optional header and 3.5 mm terminal block. Some soldering is required to attach the header and terminal block if desired. Check out the tutorial for schematics, diagrams, examples and more!

Note: The terminal block included with your product can be blue or black.

Zolltarifnummer:	85423111
Brand:	Adafruit
Country of Origin:	USA
EAN:	4060137024436
Gross Weight (kg):	0.001
Manufacturer ID:	3006
Product ID:	ADA3006

Adafruit

Adafruit: The expert for open source hardware

For more than ten years, programmers and tinkerers have benefited from the expertise of the Adafruit brand. Whether for beginners or proven experts, Adafruit has the right hardware components ready for your next IoT project.

Light comes into the dark with Adafruit NeoPixel

One extremely popular product line from the company's broad portfolio is Adafruit NeoPixel. These nifty LED components come in a wide variety of designs and color temperatures. NeoPixel modules are available, for example, in the form of a practical stick with five intelligent LEDs in red, green and blue (RGB) or in white (W), as a shield with 40 eye-saving RGBW LEDs in which all pixels are individually addressable, and as a jewel with seven RGBW LEDs that can be controlled with 8-bit PWM per channel.

Especially popular is the Adafruit NeoPixel Ring with 16 ultra-bright, intelligent RGB LEDs including integrated drivers, which you only need a single microcontroller to control. The trick is that the Adafruit NeoPixel rings form a chain, so to speak: You couple the output pin of one with the input pin of the other.

With the Adafruit NeoPixel products you can realize a wide variety of projects - there are virtually no limits to your creativity. With the help of an Arduino, a jumper cable and the appropriate software, you can control a NeoPixel ring individually and light up the small LEDs as you wish - either individually or in a specific combination. This way, you can also create your own Vu meter with the versatile LED components. Practical: To make programming Adafruit NeoPixel easier, Adafruit provides an Arduino library as well as a Python library.

Adafruit Feather Boards: Powerful hardware in a compact format

With Adafruit Feather, the hardware specialist from the States also has various powerful development boards in its range, which are essentially equivalent to an Arduino in terms of function. All of these boards are equipped with similar features; among other things, the pin assignment is the same and there are also many parallels when it comes to the microcontrollers and the battery charging properties. In addition, you can also find Feather boards with special devices like Bluetooth, Wi-Fi and cellular network connectivity as well as boards with microSD slot in Adafruit's product range. The name "Feather" is no coincidence: The boards are also characterized by being particularly compact and, above all, lightweight.

The range of top-class product highlights is wide: The STM32F405 Feather, for example, is the fastest CircuitPython board from Adafruit with an outstanding 168 MHz and meets the highest demands. It is equipped with a STEMMA QT / Qwiic port at the end, which makes it easy to connect to I2C sensors. The Adafruit Feather nRF52840 Express, on the other hand, shines with Bluetooth Low Energy and can also be used with CircuitPython thanks to native USB support.

Another important part of Adafruit's portfolio are the FeatherWings. With these expansion modules, you can also include components such as a display or a motor driver in your IoT project. The FeatherWing Proto is a proven classic in Adafruit's portfolio. This is ideally suited as a prototyping add-on for all Feather boards. The Adafruit FeatherWing Wing Tripler Mini Kit, on the other hand, is ideal if you want to connect a Feather to two other FeatherWings at the same time.

With the Adafruit MIDI FeatherWing Kit you get a music capable FeatherWing, thanks to which you can equip your Feather with MIDI input and output jacks. And with the Adafruit FeatherWing OLED you can easily add a small OLED display to your Feather board - no soldering required.

Adafruit: What's behind the brand

As an expert in open-source hardware, Adafruit has long since established itself in the electronics industry. The company was founded in 2005 by Limor Fried. At the time, the talented and innovative electrical engineer was still a student at the renowned Massachusetts Institute of Technology (MIT). To this day, Fried is CEO of the electronics giant, which is now headquartered in New York. The company's name also goes back to its founder: Fried was once known on the World Wide Web by the nickname "Ladyada" - a tribute to the famous IT pioneer Ada Lovelace.

Adafruit says it is committed to getting more people excited about technology and science - and thanks to its first-class products, the hardware expert from the USA is sure to succeed!

Manufacturer information
Adafruit Industries, LLC
168 39th Street 1905CC
US 11232 Brooklyn, New York
https://www.adafruit.com
[email protected]

WEEE number: 20453810

Person responsible for the EU
Sertronics GmbH
Am Studio 20d
DE 12489 Berlin
https://www.berrybase.de
[email protected]

Safety instructions

Avoid direct mechanical stress or damage to the product.
Only use the product in accordance with the manufacturer's instructions and specifications.
Protect the product from moisture, extreme heat or cold.
Do not operate in potentially explosive atmospheres unless expressly designed for this purpose.
Ensure correct cabling and prevent short circuits.
Only use compatible voltage sources and power supply units.
Keep the product away from strong sources of electromagnetic interference.
Avoid direct contact with water- or solvent-based substances.
Dispose of the product in accordance with the applicable environmental and electronics regulations.
Carry out recycling in accordance with the WEEE Directive or local regulations.
For products with batteries, remove them before disposal and recycle them separately.
Do not dispose of with household waste; use specialised recycling centres.

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2 reviews

29 October 2022 00:00

Richtig laut und gar kein Raus...

Richtig laut und gar kein Rauschen. Das macht dieses Teil so interessant. Habe damit (und einem Teensy mit Audio-Lib) ein Gitarren-Instrument gebaut. Man muss ein Stereo-I2S Signal zuführen und kann über einen Pin der Platine wählen ob der linke oder rechte Kanal ausgegeben werden soll.

11 April 2022 00:00