Adafruit Stereo I2S 3W Amplifier Breakout - Dual MAX98357A
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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 or any other microcontroller with I2S output! If you're looking for an easy and low-cost way to get your digital sound files bumpin', then the Stereo MAX98357A I2S Amp Breakout is for you. It takes standard I2S digital stereo 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.
This Stereo MAX98357A takes all the audio goodness you know and doubles up on it. With an additional terminal block and MAX chip, your audio projects get to be heard in stereo as it now has separate left and right channels.
Key Features
- Works great with Raspberry Pi, Arduino, ESP32, and any other microcontroller or microcomputer with I2S audio outputs
- 3.2W Output Power per channel at 4Ω, 10% THD
- Five pin-selectable gains: 3dB, 6dB, 9dB, 12dB, 15dB
- Excellent click-and-pop suppression
- Thermal shutdown protection
Technical Specifications
| Output Power per channel | 3.2W at 4Ω, 10% THD, 1.8W at 8Ω, 10% THD, with 5V supply |
| PSRR | 77 dB typ @ 1KHz |
| I2S sample rates | 8kHz to 96kHz |
| No MCLK required | Yes |
| Supply Voltage | 2.5V to 5.5V |
| Quiescent Current | 2.4mA |
| Efficiency | 92% (RL = 8Ω, P_OUT = 1W) |
| Output Noise | 25μv RMS (AV = 15dB) |
| THD+N | 0.015% at 1kHz |
| Dimensions | 25.5mm x 19.0mm x 11.8mm |
| Weight | 3.5g |
Applications
Perfect for portable and battery-powered projects requiring compact amplified sound.
