GPD2846A TF Card MP3 Audio Player and Decoder Board with 2W Amplifier

GPD2846A TF Card MP3 Audio Player and Decoder Board with 2W Amplifier is an ultra-compact standalone audio playback board centered around the GPD2846A MP3 decoder chip. Incorporating an onboard MicroSD (TF) card socket and an integrated 2W mixed mono power amplifier, it directly drives small speakers from 3.7V lithium batteries or 5V USB power supplies with simple onboard tactile pushbutton track controls.

Key Features:

• All-In-One Compact Player: Combines hardware MP3 decoding, MicroSD storage socket, and 2W amplifier on a postage-stamp sized PCB.
• Direct 3.7V Lithium Battery Operation: Highly optimized for single-cell Li-ion and LiPo batteries (3.7V to 5.0V).
• Onboard Pushbutton Controls: 4 onboard SMD buttons provide Play/Pause, Next Track/Vol+, Prev Track/Vol-, and Repeat modes.
• Automatic Auto-Play on Power-Up: Automatically begins playing stored MP3 tracks sequentially upon power application.
• Onboard Status LED: Blinks continuously during audio playback to confirm operational status.
• Direct Speaker Output: Solder pads connect directly to 2W-3W 4Ω/8Ω miniature loudspeakers.

Technical Specifications:

• Operating Voltage: 3.7V to 5.0V DC (battery or USB powered)
• Amplifier Output Power: Up to 2 Watts into a 4Ω speaker
• Supported File Formats: MP3 audio (bitrates 32 kbps to 320 kbps)
• Storage Card: MicroSD / TF flash card up to 32GB (FAT16/FAT32 formatted)
• Current Consumption: ~20 mA (quiescent); up to 450 mA at peak volume
• Operating Temperature: -20°C to +70°C

Mechanical Specifications:

• PCB Structure: Double-sided through-hole FR-4 circuit board
• Card Socket: Push-pull TF card socket
• Weight: Approximately 5 grams

Dimensions:

• Length: 34.0 mm
• Width: 22.0 mm
• Height: 6.0 mm

Pinout and Wiring:

• BAT+ / BAT-: 3.7V Lithium Battery or 5V DC Power Input
• SPK+ / SPK-: Direct Output Terminals to Speaker
• S1: Play / Pause Toggle Button
• S2: Next Track / Long-Press Volume Up
• S3: Previous Track / Long-Press Volume Down
• S4: Repeat Single / Repeat All Toggle Button

Datasheet Reference:

• Datasheet Reference: Consult Generalplus GPD2846A MP3 Decoder Chip Datasheet and reference schematics.

Commonly Used in:

• Miniature portable MP3 speakers and pocket music boxes
• Talking plush toys, greeting cards, and novelty gadgets
• Museum audio tour handsets and exhibit soundboxes
• Bicycle horn sound effect players

Applications:

• Building ultra-compact battery-powered portable music players
• Playing continuous looping background music or nature sounds
• Embedded audio playback in decorative art installations
• Voice prompt and sound effect integration in scale models

Equivalent Models:

• DFPlayer Mini MP3 Player Module
• JQ6500 Voice Playback Module
• WTV020-SD Audio Module

Package Includes:

• 1 × GPD2846A TF Card MP3 Audio Player and Decoder Board with 2W Amplifier