XY-SP5W Mini Class-D 5W Digital Audio Amplifier Board

The XY-SP5W Mini Class-D 5W Digital Audio Amplifier Board offers a compact and ultra-efficient solution for your portable audio needs. Leveraging highly efficient Class D amplification, this tiny module generates a clear, punchy sound while consuming minimal power. It’s the perfect component for projects where space and battery life are critical, such as custom Bluetooth speakers, portable radios, or adding voice playback capability to a microcontroller project. Despite its small size, the XY-SP5W delivers a respectable 5 Watts of power, making it a powerful little engine for small to medium-sized speakers. This board simplifies your audio integration by requiring only a few simple connections for power and speaker output.

Key Features:

• Ultra-Compact Footprint: Its miniature size allows for easy fitting into the tightest enclosures and portable devices.
• High Efficiency (Class D): Minimize power waste and heat generation, which significantly extends battery life in portable applications.
• 5W Mono Output: Drives a single speaker with 5 Watts of clean, digital power, ideal for mid-volume applications.
• Wide Operating Voltage: You can power the module directly from a 5V source, making it easily compatible with USB power banks or development boards like Arduino.
• Simple Wiring: Features clear solder pads for power, audio input, and speaker output, simplifying the connection process.
• Low Quiescent Current: Consumes very little power when idle, helping preserve energy in standby modes.

Technical Specifications:

• Amplifier Type: Class-D Digital Amplifier
• Output Power: 5W (into a 2Ω load)
• Operating Voltage: DC 2.5V – 5V (5V recommended)
• Output Channel: Single Channel (Mono)
• Output Impedance: 2Ω to 8Ω (4Ω recommended)
• Shutdown Control: Pin available for low-power shutdown mode.
• Protection: Short-circuit, thermal, and over-current protection.

Mechanical Specifications:

• Module Type: Bare PCB with surface-mounted components.
• Connectors: Solder pads for power and input; screw terminal for speaker output.
• Mounting: No dedicated mounting holes due to size; designed for gluing or integrating into a housing.
• Material: Standard PCB material with silkscreen labeling.

Dimensions:

• Board Length: ~25 mm
• Board Width: ~15 mm
• Board Thickness: ~2.5 mm

Pinout and Wiring:

• VCC / GND: Power supply input (Connect VCC to +5V and GND to ground).
• IN+ / IN-: Audio input terminals (Connect your audio source, ensuring IN- is grounded or connected to the source’s ground).
• SP+ / SP-: Speaker output terminals (Connect the positive and negative leads of your single speaker to these screw terminals).
• SD (Shutdown): Pull this pin low to put the amplifier into a low-power shutdown state. Connect to VCC or leave floating for normal operation.
• Wiring Note: Always connect your power source directly to the VCC/GND pads. Ensure your audio source is properly grounded to the board’s GND.

Datasheet Reference:

• Download Datasheet

Commonly Used in:

• DIY Bluetooth Speakers: Its low power draw makes it perfect for battery-powered wireless audio.
• Microcontroller Audio: Adding voice prompts, music, or sound effects to Arduino and ESP32 projects.
• Portable Radios: Upgrading the weak internal amplifier in small, custom-built radios.

Applications:

• Wearable Tech: Integrating sound into small, battery-operated projects.
• Interactive Art Installations: Powering small speakers for sound feedback in art projects.
• Game Console Builds: Providing audio output for handheld gaming emulators or retro console projects.

Equivalent Models:

• PAM8403: A highly popular, tiny stereo amplifier (2x3W) with similar voltage requirements.
• LM386: A much older, lower-efficiency Class AB amplifier, often used by hobbyists for very basic, low-power audio.

Package Includes:

• 1 x XY-SP5W Mini Class-D 5W Digital Audio Amplifier Board