Adafruit I2S Stereo Decoder – UDA1334A Breakout



  • Adafruit
Availability: In Stock - Available While Quantities Last


SKU: BOB-097 Manufacturer: Adafruit Industries Mfg Part Number: 3678 Category: Tags: , , ,


This fully-featured UDA1334A I2S Stereo DAC breakout is a perfect match for any I2S-output audio interface. It’s affordable but sounds great! It is compatible with 3.3V – 5V logic levels (a rarity) and can process multiple different formats by setting two pins to high or low. The DAC will process data immediately, and give you a clear, analog, stereo line level output. It can even handle MCLK-less I2S interfaces such as the Raspberry Pi (which it’s ideal for) – a built in PLL will generate the proper clock from the bitclock signal.

For inputs, you can use classic I2S (the default) or 16-bit, 20-bit or 24-bit left justified data. You can set it up to take an input system/master clock but Adafruit has default-set it to just generate it for you, so you only need to connect Data In, Word Select (Left/Right Clock) and Bit Clock lines. If you want, there’s a mute pin and a de-emphasis filter you can turn on.

Adafruit has used plenty of ferrite beads, a low-dropout regulator, and the recommended band-pass filter so this board produces nice clean output.

Please Note: Minor soldering is required to add the breadboard friendly header



  • I2S (the default),16-bit, 20-bit or 24-bit left justified data
  • 3.3V – 5V logic levels
  • Compatible with MCLK-less I2S interfaces (Raspberry Pi)
  • Dimensions: 40 x 25 x 7.1mm / 1.6 x 1 x 0.3″



Adafruit I2S Stereo Decoder:


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 8 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is Final Sale and cannot be returned once purchased. 

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