# MAX98357 Audio DAC Breakout 077b ## Description This compact breakout board makes it easy to add high-quality audio output to your microcontroller projects using the MAX98357A/B Class D audio amplifier. Perfect for Arduino, ESP32, Raspberry Pi, or any microcontroller with I2S output capabilities. Features High-Performance Audio: Delivers Class AB audio quality with Class D efficiency (92% efficient at 1W) Powerful Output: 3.2W into 4Ω speakers at 5V supply Clean Sound: Low distortion (0.013% THD+N at 1kHz) Wide Supply Range: Operates from 2.5V to 5.5V Simplified I2S Interface: No MCLK required, just BCLK, LRCLK, and DIN Selectable Gain: Solder jumpers for easy gain selection (3dB, 6dB, 9dB, 12dB, or 15dB) Channel Selection: Configure for left, right, or combined (mono) output Filterless Design: No need for external output filtering components Compact Form Factor: Minimal board space with optimized layout Applications Smart speakers and voice assistants Portable audio devices IoT audio projects Gaming devices and sound effects Educational audio projects Digital instrument amplification The FLUX MAX98357 breakout board requires only three I/O pins plus power, making it the perfect audio solution for projects where simplicity and sound quality matter. ## Project Details - **Owner:** flux - **Created:** 3/29/2025 - **Last Updated:** 3/29/2025 - **Visibility:** Public - **Stars:** 2 - **Copies:** 1 ## Key Components ### BEAD1 — [MAF1005FSA102AT000](https://www.flux.ai/lcsc/maf1005fsa102at000~vjo7.md) - Manufacturer Part Number: MAF1005FSA102AT000 - Part Type: Ferrite Beads - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_TDK-MAF1005FSA102AT000_C432983.pdf - JLCPCB Part Class: Extended Part - LCSC Part Number: C432983 - Manufacturer Name: TDK - Product Info Url: https://lcsc.com/product-detail/Beads_TDK-MAF1005FSA102AT000_C432983.html - Package or Case Code: L0402 **Pins:** - 1 [pin 1] - 2 [pin 2] ### BEAD2 — [MAF1005FSA102AT000](https://www.flux.ai/lcsc/maf1005fsa102at000~vjo7.md) - Package or Case Code: L0402 - Product Info Url: https://lcsc.com/product-detail/Beads_TDK-MAF1005FSA102AT000_C432983.html - Manufacturer Name: TDK - LCSC Part Number: C432983 - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_TDK-MAF1005FSA102AT000_C432983.pdf - Manufacturer Part Number: MAF1005FSA102AT000 - Part Type: Ferrite Beads **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Part Number: 691137710002 - Manufacturer Name: Würth Elektrik - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — MSD-4-A - Manufacturer Part Number: MSD-4-A - Datasheet URL: https://www.cuidevices.com/product/resource/msd-4-a.pdf - Part Type: Connector - Manufacturer Name: CUI Devices **Pins:** - CD [pin CD1] - CD/DAT3 [pin 2] - CLX [pin 5] - CMD [pin 3] - DAT0 [pin 7] - DAT1 [pin 8] - DAT2 [pin 1] - G1 [pin G1] - G2 [pin G2] - G3 [pin G3] - G4 [pin G4] - VDD [pin 4] - VSS [pin 6] ### J3 — [Pin Header 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x04-254mm-vertical~l97.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: MISC Power Out **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### J4 — [Pin Header 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x04-254mm-vertical~l97.md) - Part Type: MISC Power Out - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### J5 — [Pin Header 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x04-254mm-vertical~l97.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: MISC Power Out **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### J6 — [Pin Header 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x04-254mm-vertical~l97.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: MISC Power Out **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### U1 — [MAX98357AETE+T](https://www.flux.ai/adrian95/max98357aeteplust~wk.md) - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max98357a-max98357b.pdf - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MAX98357AETE+T **Pins:** - ~SD_MODE [pin 4] - BCLK [pin 16] - DIN [pin 1] - GAIN_SLOT [pin 2] - GND_1 [pin 3] - GND_2 [pin 11] - GND_3 [pin 15] - LRCLK [pin 14] - N.C._1 [pin 5] - N.C._2 [pin 6] - N.C._3 [pin 12] - N.C._4 [pin 13] - OUTN [pin 10] - OUTP [pin 9] - THERMAL_PAD [pin 17] - VDD_1 [pin 7] - VDD_2 [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/flux/max98357-audio-dac-breakout-077b~9z](https://www.flux.ai/flux/max98357-audio-dac-breakout-077b~9z).* --- *Generated from [https://www.flux.ai/flux/max98357-audio-dac-breakout-077b~9z](https://www.flux.ai/flux/max98357-audio-dac-breakout-077b~9z)*