Description

Product introduction: PAM8403 Mini Class D Digital Power Amplifier Board

1. Working voltage: 2.5V-5.5V. Note: The power supply voltage should not exceed 5.5V, and the positive and negative power supply should not be reversed.

2. Speaker matching: 4-8 ohms, recommended: 4 ohms; speaker power: 2-8W.

3. You can use the 5V power supply of the computer USB port, or use the 5V power supply of the USB port of the mobile phone charger, or you can use the lithium battery power supply.

4. High efficiency 90%, under 4Ω load and 5V power supply, it can provide 3W (left channel) + 3W (right channel) output power. The efficiency of class A, class B and other power amplifiers is only about 30%, and class D power amplifiers are highly respected under the current green trend.

5. Class D power amplifier is very efficient, will not affect the sound quality due to temperature rise, and does not need to add heat sinks, occupying a small volume.

application:

LCD TVs, monitors

laptop

portable speaker

Portable DVD Players, Game Consoles

Cell Phone / Speakerphone

2. Precautions for use:

Turn on the speaker first and then turn on the power, otherwise it is easy to cause damage to the chip;

Since the digital volume control in the module has a large gain, do not let the audio signal input too large and cause the signal to cut and limit.

3. Wiring diagram: