GPD2846A TF CARD MP3 Decoder Board 2W Amplifier Module

GPD2846A TF CARD MP3 Decoder Board 2W Amplifier Module is a highly integrated, cost-effective audio solution designed to play MP3 files directly from a micro SD (TF) card. This versatile module combines a high-quality MP3 decoder with a built-in 2W mono power amplifier, enabling it to drive a speaker directly without requiring additional external amplification components. Furthermore, the board features dedicated pads for user-defined control buttons, allowing you to easily implement play, pause, volume adjustment, and track selection. Consequently, it serves as an ideal choice for DIY audio projects, portable speakers, and embedded voice prompts. Therefore, you can quickly add high-fidelity audio playback to your electronic designs with minimal wiring and power requirements.

Key Features:

• Integrated 2W Amplifier: The board features an on-board mono power amplifier capable of delivering 2W into a 4 Ω load, simplifying your audio setup.
• TF Card Support: An integrated micro SD slot allows the device to play MP3 files directly from cards formatted in FAT16 or FAT32.
• Automatic Playback: The module automatically detects the presence of a TF card and begins playback upon power-up, ensuring immediate operation.
• Button Control Interface: Dedicated solder pads provide access to functions such as Volume Up/Down, Next/Previous track, and Play/Pause.
• On-Board LED Indicator: A built-in status LED provides visual feedback by flashing during active playback and remaining steady when paused.

Technical Specifications:

• Operating Voltage: 3.7 V to 5.0 V DC (Compatible with Lithium batteries or USB power)
• Output Power: 2 W (at 5V supply with 4 Ω speaker)
• Audio Format: MP3 (MPEG Layer 3)
• Supported Storage: Micro SD / TF Card (Up to 32GB)
• Signal-to-Noise Ratio (SNR): ≥ 85 dB
• Total Harmonic Distortion (THD): ≤ 10% (at maximum output)

Mechanical Specifications:

• Board Material: High-quality FR-4 Double-sided PCB
• Storage Slot: Push-Pull Micro SD (TF) Socket
• Mounting: Compact footprint for easy integration into handheld enclosures.
• Solder Pads: Large, tinned pads facilitate secure wire connections for power, speakers, and switches.

Dimensions:

• Length: ≈ 34.5 mm
• Width: ≈ 22.5 mm
• Height: ≈ 4.0 mm
• Weight: ≈ 4.5 g

Pinout and Wiring:

• BAT+ / BAT-: Connect to a 3.7V Lithium battery or 5V DC power source.
• SPK+ / SPK-: Connect directly to a 4 Ω or 8 Ω mono speaker.
• S1 (Prev/V–): Short press for previous track; long press to decrease volume.
• S2 (Next/V++): Short press for next track; long press to increase volume.
• S3 (Play/Pause): Short press to toggle between play and pause modes.
• S4 (Stop): Short press to stop playback.
• Wiring Note: However, you must ensure correct polarity for the power supply to prevent permanent damage to the GPD2846A chip.

Datasheet Reference:

• Download GPD2846A MP3 Decoder Chip Datasheet

Commonly Used in:

• DIY Portable Speakers: Engineers frequently use this module to create compact, battery-powered MP3 players.
• Toy Manufacturing: Provides sound effects and voice clips for interactive toys and educational tools.
• Public Address Systems: Plays pre-recorded messages or music in small-scale information kiosks.

Applications:

• Voice Greeting Cards: Integrated into high-end greeting cards to deliver personalized audio messages.
• Automated Voice Prompts: Adds audio instructions to equipment such as vending machines or elevator panels.
• Smart Home Feedback: Provides audible alerts and status updates for home automation hubs.

Equivalent Models:

• DFPlayer Mini: A more advanced module that includes a UART interface for microcontroller control.
• JQ6500 MP3 Module: A similar audio decoder with built-in flash memory options.
• DY-SV17F: Another all-in-one trigger-based audio module, although it typically supports more trigger modes.

Package Includes:

• 1 x GPD2846A TF CARD MP3 Decoder Board 2W Amplifier Module