The Adafruit PCM5100 I2S DAC converts digital I2S audio into clean, high-quality stereo line-level output through a 3.5mm jack. With 100dB signal-to-noise ratio and no MCLK or I2C configuration required, simply pipe I2S data in and get great-sounding analogue audio out.

The PCM5100 accepts 16, 24, or 32-bit audio and automatically determines the correct format from the WSEL/BCLK ratio. It generates its own master clock internally from the bit clock, so no MCLK connection is needed (though an optional MCLK input is available). Audio output is line-level, centred on ground and not AC-coupled — suitable for amplifiers and powered speakers with 1K ohm or greater input impedance.

Key Features

• 100dB SNR / Dynamic Range – Clean stereo audio output from the PCM5100 chip
• I2S Input – Just BCLK, WSEL, and DIN (3.3V logic) — no MCLK or I2C configuration needed
• 16/24/32-bit Audio – Automatically detects bit depth from clock ratio
• 3.5mm Line-Level Output – Plus breakout pads for direct wiring
• 3–5V Power – Wide supply voltage range
• I2S or Left-Justified – Toggle the Format pin to switch modes
• Configurable Options – Filter mode (normal/low-latency), mute, and 44.1kHz de-emphasis via breakout pads

Ideal For

• Adding high-quality audio output to I2S-capable microcontrollers and SBCs
• WAV and MP3 playback projects needing clean stereo DAC output
• Audio prototyping on breadboards with the included header
• Driving powered speakers or amplifier inputs from digital audio sources

Package Contents

• 1× PCM5100 I2S Stereo DAC Breakout
• 1× Header strip for breadboard use