Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

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Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

SKU: AF3006

5.0 / 2 reviews

7,95 €

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Delivery time: 1 - 3 Workdays (DE - int. shipments may differ)

Product Information

Product safety information

Manufacturer information:

Adafruit Industries LLC
Varick St. 150
Unknown NY
New York, Vereinigte Staaten, 10013
[email protected]
https://eckstein-shop.de/Adafruit-Marken

Responsible person:

Eckstein GmbH
Am Ostbahnhof 3
Niedersachsen
Clausthal-Zellerfeld, Deutschland, 38678
[email protected]
https://eckstein-shop.de

Dimensions and Weight
GTIN:	4060137024436
HAN:	3006
Category:	Audio/Sound Module
Storage Tiers:	Tier2
RoHS Certificate:	compliant
Shipping weight:	0,01 kg
Item weight:	0,00 kg
Dimensions ( Length × Width × Height ):	1,90 × 1,80 × 0,30 cm

Product Description

DESCRIPTION

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 an easy and low cost way to get your digital sound files bumpin' then the MAX98357 I2S Amp Breakout is for you. It takes standard I2S digital audio input and, not only decodes it into analog, but also amplifies it directly into a speaker. Perfect for adding compact amplified sound, it takes 2 breakouts (I2S DAC + Amp) and combines them into one.

I2S (not to be confused with I2C) in a digital sound protocol that is used on circuit boards to pass audio data around. Many high end chips and processors manage all of the audio in digital I2S format. Then, to input or output data, three or four pins are used (data in, data out, bit clock and left-right channel select). Usually, for audio devices, there's a DAC chip that will take I2S in and convert it to analog that can drive a headphone.

This small mono amplifier is surprisingly powerful - able to deliver 3.2 Watts of power into a 4 ohm impedance speaker (5V power @ 10% THD). Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, it's incredibly efficient - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot.

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

There's a Gain pin that can be manipulated to change the gain. By default, the amp will give you 9dB of gain. By connecting a pullup or pull down resistor, or wiring directly, the Gain pin can be set up to give 3dB, 6dB, 9dB, 12dB or 15dB.

The ShutDown/Mode pin can be used to put the chip in shutdown or set up which I2S audio channel is piped to the speaker. By default, the amp will output (L+R)/2 stereo mix into mono out. By adding a resistor, you can change it to be just left or just 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 4O, 10% THD, 1.8W at 8O, 10% THD, with 5V supply
PSRR: 77 dB typ @ 1KHz
I2S sample rates from 8kHz to 96kHz
No MCLK required
Click + Pop reduction
Five pin-selectable gains: 3dB, 6dB, 9dB, 12dB, 15dB
Excellent click-and-pop suppression
Thermal shutdown protection

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

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

TECHNICAL DETAILS

Product Dimensions: 19.4mm x 17.8mm x 3.0mm / 0.8" x 0.7" x 0.1"
Product Weight: 1.2g / 0.0oz

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Total entries: 2

03.04.2020 Verified purchase

Der optimale Verstärker für Projekte

Der MAX98357A ist leider nur als QFN-Package erhätlich, darum lag es nahe zum Experimentieren dieses fertige Board zu kaufen.

Dieser Mono-Vderstärker (R+L, L oder R) kann durch ein 2. Modul und der richtigen Selektion zu einer Stereoverstärkerkombination ergänzt werden, welcher über nur eine I2S-Schnittstelle mit dem jeweils richtigen Kanal (R oder L) angesteuert werden kann.
Die perfekte Wahl !

Johann F. E

21.03.2022 Verified purchase

Super für den Aufbau eines web-Radios

Schnelle Lieferung und super Qualität.
Habe damit ein einfaches Web-Radio mit I2S 3W Class D Amplifier - MAX98357A, ESP32 und TFT Display gebaut.

Friedrich K

Bedieungsanleitung

MAX98357 Datasheet

GitHub with EagleCAD PCB Files

Fritzing object in the Adafruit Fritzing library

Manufacturer according to GPSR
Adafruit Industries LLC, Varick St. 150, 10013 New York, Unknown NY, Vereinigte Staaten, [email protected], https://eckstein-shop.de/Adafruit-Marken
Responsible person according to GPSR
Eckstein GmbH, Am Ostbahnhof 3, 38678 Clausthal-Zellerfeld, Niedersachsen, Deutschland, [email protected], https://eckstein-shop.de

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Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

Dimensions and Weight

Der optimale Verstärker für Projekte

Super für den Aufbau eines web-Radios

Bedieungsanleitung

MAX98357 Datasheet

GitHub with EagleCAD PCB Files

Fritzing object in the Adafruit Fritzing library

Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A

Service package

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