5V DC Mini Class D Pam8403 USB Power Amplifier Board Documentation

Component Name

5V DC Mini Class D Pam8403 USB Power Amplifier Board

Overview

The 5V DC Mini Class D Pam8403 USB Power Amplifier Board is a compact, high-efficiency audio amplifier module designed for use in a variety of IoT applications, including DIY projects, robotics, and embedded systems. This module utilizes the Pam8403 chip, a highly integrated Class-D audio amplifier IC, to deliver high-quality audio amplification with low power consumption.

Functionality

The Pam8403 USB Power Amplifier Board is a complete audio amplifier solution that takes in a digital audio signal from a USB input and amplifies it to drive speakers or headphones. The module's primary function is to boost the audio signal to a level suitable for driving a wide range of speakers, while minimizing power consumption and heat generation.

Key Features

High-Efficiency Class-D Amplification: The Pam8403 chip utilizes a high-efficiency Class-D amplification topology, which ensures low power consumption, high reliability, and reduced heat generation.
USB Input: The module features a USB input for easy connection to a computer, microcontroller, or other USB-enabled devices.
5V DC Power Supply: The module operates on a 5V DC power supply, making it suitable for use with a wide range of IoT devices and projects.
Stereo Audio Amplification: The Pam8403 chip supports stereo audio amplification, allowing for separate Left and Right channel outputs.
High-Quality Audio: The module is capable of delivering high-quality audio with a high signal-to-noise ratio (SNR) and low total harmonic distortion (THD).
Low Quiescent Current: The module's quiescent current is very low, making it suitable for battery-powered applications.
Compact Size: The module is designed to be small and compact, making it ideal for use in space-constrained IoT projects.
Easy to Use: The module requires no external components or complex configuration, making it easy to integrate into a wide range of IoT applications.

Technical Specifications

Dimensions

25 x 15 x 10mm

Applications

The 5V DC Mini Class D Pam8403 USB Power Amplifier Board is suitable for use in a wide range of IoT applications, including

DIY audio projects

Robotics and automation

Embedded systems

Wearable devices

IoT speakers and sound systems

Home automation systems

Conclusion

The 5V DC Mini Class D Pam8403 USB Power Amplifier Board is a compact, high-efficiency audio amplifier module that is ideal for use in a wide range of IoT applications. Its low power consumption, high-quality audio, and compact size make it an attractive solution for designers and developers looking to add audio capabilities to their IoT projects.

Pin Configuration

5V DC Mini Class D Pam8403 USB Power Amplifier Board Pinout Guide
The 5V DC Mini Class D Pam8403 USB Power Amplifier Board is a compact and efficient audio amplifier module designed for IoT and DIY projects. This documentation provides a detailed explanation of each pin on the board, along with guidance on how to connect them correctly.
Pinout Structure:
The Pam8403 amplifier board has a total of 7 pins, comprising 3 input pins, 2 output pins, and 2 power pins. The pins are labeled as follows:
Input Pins:
1. VIN ( Voltage Input ):
Function: Supplies power to the amplifier module (5V DC recommended)
Connection: Connect to a 5V DC power source (e.g., USB port, battery, or a 5V voltage regulator output)
2. GND ( Ground ):
Function: Provides a common ground reference for the amplifier module
Connection: Connect to the ground terminal of the power source and other components in the circuit
3. IN+ ( Audio Input Positive ):
Function: Receives the audio signal from a source device (e.g., microcontroller, smartphone, or computer)
Connection: Connect to the audio output of the source device (e.g., 3.5mm audio jack or a digital-to-analog converter)
Output Pins:
1. SPK+ ( Speaker Positive ):
Function: Outputs the amplified audio signal to a speaker or load
Connection: Connect to the positive terminal of the speaker or load
2. SPK- ( Speaker Negative ):
Function: Outputs the amplified audio signal to a speaker or load
Connection: Connect to the negative terminal of the speaker or load
Power Pins:
1. USB ( USB Power Input ):
Function: Supplies power to the amplifier module through a USB connection (5V DC)
Connection: Connect to a USB port or a USB power adapter (optional)
2. EN ( Enable ):
Function: Enables or disables the amplifier module (active high)
Connection: Connect to a digital output of a microcontroller or a logic level converter to control the amplifier's state (optional)
Important Notes:
The Pam8403 amplifier module is designed to operate with a 5V DC power supply.
Ensure the power source can supply enough current to drive the amplifier and connected load.
Use proper heat management techniques (e.g., heat sinks, thermal tape) to prevent overheating, especially during high-power operation.
The amplifier module may have internal decoupling capacitors, but it is recommended to add external decoupling capacitors (e.g., 100nF, 10uF) between the VIN pin and GND to reduce noise and improve stability.
By following this pinout guide, you can successfully integrate the 5V DC Mini Class D Pam8403 USB Power Amplifier Board into your IoT project or DIY design.

Code Examples

5V DC Mini Class D Pam8403 USB Power Amplifier Board Documentation

Overview

The 5V DC Mini Class D Pam8403 USB Power Amplifier Board is a compact and efficient audio amplifier module designed for use in IoT projects. The board is based on the Pam8403, a high-performance Class D audio amplifier IC, and operates on a single 5V DC power supply. This module is ideal for powering small speakers or headphones in IoT applications such as smart home devices, robots, and wearable devices.

Features

Compact size: 25mm x 15mm
 Operates on 5V DC power supply
 High-efficiency Class D amplifier
 Pam8403 IC with low THD (Total Harmonic Distortion) and noise
 Support for stereo audio output
 USB interface for easy connectivity
 Small form factor, ideal for IoT projects

Pinout

| Pin | Function |
| --- | --- |
| VCC | 5V DC power supply |
| GND | Ground |
| USB_D+ | USB data plus |
| USB_D- | USB data minus |
| L_IN | Left channel audio input |
| R_IN | Right channel audio input |
| L_OUT | Left channel audio output |
| R_OUT | Right channel audio output |

Code Examples

### Example 1: Simple Audio Playback using Arduino

In this example, we'll use the 5V DC Mini Class D Pam8403 USB Power Amplifier Board with an Arduino Uno to play a simple audio tone through a connected speaker.

```c++
const int leftChannelPin = 2;  // Connect to L_IN pin on the amplifier board
const int rightChannelPin = 3; // Connect to R_IN pin on the amplifier board

void setup() {
  pinMode(leftChannelPin, OUTPUT);
  pinMode(rightChannelPin, OUTPUT);
}

void loop() {
  // Generate a 1 kHz tone on both channels
  tone(leftChannelPin, 1000);
  tone(rightChannelPin, 1000);
  delay(1000);
  noTone(leftChannelPin);
  noTone(rightChannelPin);
  delay(1000);
}
```

### Example 2: Playing MP3 Files using Raspberry Pi

In this example, we'll use the 5V DC Mini Class D Pam8403 USB Power Amplifier Board with a Raspberry Pi to play MP3 files through a connected speaker.

```python
import pygame

# Initialize Pygame mixer module
pygame.mixer.init()

# Open an MP3 file
pygame.mixer.music.load("example.mp3")

# Play the MP3 file
pygame.mixer.music.play()

# Wait for the MP3 file to finish playing
while pygame.mixer.music.get_busy():
    pygame.time.Clock().tick(10)

# Clean up
pygame.mixer.quit()
```

### Example 3: Real-Time Audio Streaming using ESP32

In this example, we'll use the 5V DC Mini Class D Pam8403 USB Power Amplifier Board with an ESP32 board to stream audio in real-time from a remote server.

```c++
#include <WiFi.h>
#include <Audio.h>

// Define Wi-Fi and audio streaming parameters
const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char audioStreamUrl = "http://example.com/audio_stream.mp3";

WiFiClient client;
Audio audio;

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  audio.begin();
  audio.connect(audioStreamUrl);
}

void loop() {
  if (audio.available()) {
    audio.play();
  }
  delay(10);
}
```

These examples demonstrate how to use the 5V DC Mini Class D Pam8403 USB Power Amplifier Board in various IoT contexts, including simple audio playback, playing MP3 files, and real-time audio streaming.

Signal-to-Noise Ratio (SNR)	90dB
Total Harmonic Distortion (THD)	0.1%

5V DC Mini Class D Pam8403 USB Power Amplifier Board

Component Name

Supply Voltage

Output Power

Frequency Response

Quiescent Current

Dimensions

Pin Configuration

Code Examples

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5V DC Mini Class D Pam8403 USB Power Amplifier Board

Component Name

Supply Voltage

Output Power

Frequency Response

Quiescent Current

Dimensions

Pin Configuration

Code Examples