PAM8403 With Volume

The PAM8403 With Volume is a compact and efficient stereo audio amplifier module based on the PAM8403 Class-D audio amplifier IC. It is designed to amplify low-level audio signals and drive small speakers, making it an excellent choice for DIY speaker systems, portable audio devices, Arduino projects, Bluetooth speakers, and other electronics applications.

Its compact size makes it easy to integrate into projects where space is limited, while the built-in volume control provides a convenient way to adjust audio output without requiring a separate volume-control circuit.

Compact Stereo Audio Amplifier

The PAM8403 is designed for stereo audio amplification and is commonly used to drive two small speakers. Depending on the specific board design, speaker and power-supply configuration, the module can provide up to approximately 3W per channel under suitable operating conditions.

The actual output power depends on factors such as supply voltage, speaker impedance, audio signal, board design, and thermal conditions.

Built-In Volume Control

This version of the PAM8403 module includes a volume control, making it convenient for applications where users need direct adjustment of audio output.

The volume control can be useful in:

• DIY Bluetooth speakers
• Portable audio projects
• Small speaker systems
• Arduino sound projects
• Multimedia electronics
• Educational electronics projects
• Custom audio devices

Class-D Amplifier Design

The PAM8403 uses Class-D amplification, which provides efficient audio amplification in a small package. Its efficient design makes the module suitable for compact and battery-powered applications where reducing power loss can be important.

The module can be used with a variety of low-level audio sources, provided the input signal and electrical specifications are compatible with the particular board.

Suitable for Arduino and DIY Electronics

The PAM8403 With Volume can be integrated into projects using Arduino and other microcontrollers when an external audio signal is available. It can also be paired with Bluetooth audio receiver modules, MP3 decoder boards, DACs, computers, phones, and other compatible audio sources.

Typical project applications include:

• Arduino speaker projects
• Bluetooth speakers
• DIY portable speakers
• MP3 player projects
• ESP32 audio projects
• Small desktop speakers
• Battery-powered audio devices
• Educational electronics
• Custom sound systems

Two-Channel Stereo Output

The module provides two audio output channels for stereo applications. This allows you to connect a left speaker and right speaker to create a compact stereo audio system.

Low-Voltage Audio Applications

The PAM8403 is commonly used in low-voltage electronics projects and is particularly popular for compact and portable audio applications.

Its small form factor makes it easy to install inside:

• Portable speaker enclosures
• DIY audio boxes
• Robot projects
• Small electronic instruments
• Custom enclosures
• Battery-powered devices

Key Features

• PAM8403 Class-D audio amplifier IC
• Stereo two-channel audio output
• Up to approximately 3W + 3W output under suitable conditions
• Built-in volume control
• Compact module design
• Suitable for small speaker projects
• Efficient Class-D amplification
• Ideal for DIY electronics
• Suitable for Arduino and other microcontroller projects
• Useful for Bluetooth audio applications
• Suitable for portable audio devices

Applications

• DIY Bluetooth speakers
• Portable speaker systems
• Arduino audio projects
• ESP32 audio projects
• MP3 player projects
• Small stereo speakers
• Battery-powered speakers
• DIY multimedia systems
• Educational electronics projects
• Custom audio devices
• Mini sound systems
• Robotics projects with audio output
• Electronic instruments
• Embedded audio applications