PAM8302 2.5W Class D Audio Amplifier Module – CJMCU-832
PAM8302 2.5W Class D Audio Amplifier Module – CJMCU-832
PAM8302 2.5W Single-Channel Class D Audio Power Amplifier Module (CJMCU-832)
Upgrade your DIY electronics projects with the CJMCU-832 PAM8302A Audio Power Amplifier Module — a compact, high-efficiency Class D amplifier board ideal for makers, hobbyists, and engineers. Built around the PAM8302A IC, this SMD module delivers up to 2.5W of clean audio output from a wide supply voltage range, making it perfect for Arduino, Raspberry Pi, and other microcontroller-based audio applications.
Key Features
- 2.5W Output Power – Punchy, efficient single-channel Class D amplification for speakers and audio projects
- Wide Supply Voltage: 2V – 5.5V — compatible with 3.3V and 5V logic systems including Arduino, ESP32, and Raspberry Pi
- SMD Package – Compact form factor for easy integration into space-constrained builds
- Wide Operating Temperature Range: -40°C to +85°C — reliable across demanding environments
- High Efficiency Class D Design – Minimal heat generation, maximizing battery life in portable projects
- No High-Concern Chemicals – Clean build with no hazardous substances declared
- Development Board Ready – Breakout-style layout with accessible pads for quick prototyping
Technical Specifications
| IC | PAM8302A |
| Output Power | 2.5W (single channel) |
| Amplifier Class | Class D |
| Supply Voltage | 2V – 5.5V |
| Operating Temperature | -40°C to +85°C |
| Package | SMD |
| Condition | New |
| Quantity | 1 Module |
| Country of Origin | Made in Mainland China |
Ideal For
- Arduino & Raspberry Pi audio output circuits
- Portable Bluetooth speaker prototypes
- DIY intercom and sound alert systems
- Embedded electronics and maker projects
- Computer and desktop audio amplification experiments
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Frequently Asked Questions
Q: What voltage does the PAM8302 CJMCU-832 amplifier module operate at?
A: The PAM8302A CJMCU-832 module operates across a supply voltage range of 2V to 5.5V, making it fully compatible with 3.3V and 5V development boards such as Arduino, ESP32, STM32, and Raspberry Pi without requiring additional voltage regulation.
Q: What speaker impedance is recommended for this Class D amplifier module?
A: The PAM8302A is optimized for use with 4Ω or 8Ω speakers. For best audio output quality and efficiency, a 4Ω speaker is recommended when running at 5V supply voltage to achieve the rated 2.5W output power.
Q: Is this module suitable for battery-powered projects?
A: Yes — the high-efficiency Class D design of the PAM8302A minimizes power dissipation, making this module an excellent choice for battery-powered and portable audio applications where energy efficiency is important.
Q: How do I connect this module to an Arduino or Raspberry Pi?
A: Connect the module's VIN and GND pins to your board's 3.3V or 5V supply, feed your audio signal into the IN+ and IN- pins, and connect a compatible speaker to the output pads. No external components are needed for basic operation, making it ideal for rapid prototyping.