Adafruit has added a new breakout board to their range of decoders in the form of the Adafruit I2S Stereo Decoder UDA1334A Breakout which is now available to purchase priced at $6.95 and offers a fully featured UDA1334A I2S Stereo DAC breakout, perfect for any I2S-output audio interface. Adafruit explains more about the new breakout board that measures just 40.0mm x 25.0mm x 7.1mm in size and weighs only 4.6 g.
It’s affordable but sounds great! The NXP UDA1334A is a jack-of-all-I2S-trades: you can use 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’s even cool with 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 we 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. We put in plenty of ferrite beads, a low-dropout regulator, and the recommended band-pass filter so you get a very nice clean output. With a sine-wave generator we swept through 20-20KHz and saw no attenuation or distortion. Plug into either the 3.5mm stereo headphone jack or the breadboard-friendly pads. We think you’ll be pleased with this DAC!
More details and ordering options jump over to the official Adafruit website by following the link below. If you enjoy building Raspberry Pi projects you might be interested in our comprehensive list of Raspberry Pi displays, HATS and small screens.
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