PCM5102 Stereo Digital‑to‑Analog Converter Module I2S DAC Audio Decoder Board With Pin Header Jumper Wire For ESP32 STM32 Arduino Audio Player DIY Project

PCM5102 I2S DAC Audio Stereo Digital‑to‑Analog Converter Module

📌 Product Overview

The PCM5102 module is a high‑performance stereo I2S DAC decoder board based on PCM5102 chip. Integrated PLL eliminates master clock requirement, supports three‑wire I2S connection and effectively reduces system electromagnetic interference. It adopts two‑stage mute system with intelligent clock error correction and PowerSense undervoltage protection for quiet audio output. Compared with traditional switched‑capacitor DAC, it delivers up to 20dB lower out‑of‑band noise, reduces EMI and aliasing interference. It provides up to 2.1VRMS differential linear output, supports 1kΩ load, no need for output capacitor or external mute circuit. It supports XSMT pin for external undervoltage protection & mute control, and enters low‑power sleep mode without BCK/LRCK signal. Equipped with 3.5mm headphone jack and pin header audio output, perfectly fit for ESP32, STM32 and other I2S main controller audio playback projects.

📋 Product Specifications

Item	Parameter
Model	PCM5102 Audio Module
Product Type	I2S DAC Decoder
Chip	PCM5102
Operating Voltage	5V
Communication Interface	I2S
Input Interface	2.54mm pin header
Output Interface	2.54mm pin header / 3.5mm headphone jack
Dimension	31.8mm × 17mm
Weight	8g
Working Temperature	-40℃ ~ +85℃

🔌 Pin Definition

Pin	Description
VIN	Power supply positive
GND	Common ground terminal, digital ground
LCK	Audio digital clock input
DIN	Audio data input
BCK	Audio data bit clock input
SCK	System clock input
1/FLT	Filter selection: Normal delay(low)/Low delay(high)
2/DEMP	De‑emphasis control for 44.1kHz sampling rate: Off(low)/On(high)
3/XSMT	Soft mute control: Soft mute(low)/Unmute(high)
4/FMT	Audio format selection: I2S(low)/Left‑justified(high)
A3V3	3.3V power output
AGND	Analog ground, connected with digital ground
ROUT	DAC right channel analog output
LROUT	DAC left channel analog output

💡 Solder Pad Setting Instruction

• H1L: Set FLT pin. Short left‑center pads for high level; short right‑center pads for low level.
• H2L: Set DEMP pin. Short left‑center pads for high level; short right‑center pads for low level.
• H3L: Set XSMT pin. Short left‑center pads for high level; short right‑center pads for low level.
• H4L: Set FMT pin. Short left‑center pads for high level; short right‑center pads for low level.

✨ Main Features

✅ Built‑in PLL, no master clock required, 3‑wire I2S compatible ✅ Two‑stage mute system, intelligent clock error & undervoltage protection ✅ 20dB lower out‑of‑band noise, reduce EMI & aliasing distortion ✅ 2.1VRMS differential linear output, drive 1kΩ load directly ✅ 3.5mm headphone jack & pin header dual audio output ✅ Auto sleep mode when audio signal disappears ✅ Multiple configurable solder pads for filter, format and mute setup ✅ Comes with pin header and DuPont wires for quick wiring

🛠 Application Scenarios

Embedded audio playback, single‑chip audio decoder, DIY music player, smart speaker, ESP32 / STM32 audio project, digital audio signal conversion.

⚠ Important Usage Notice

Kind reminder: If there are version differences or images have not been updated, please refer to the actual product.