Introduction
We have already discussed a lot about amplifiers in our previous articles. And, now we are sure that you know that these are the signal that helps to convert the weak audio, voltage, or current signals into stronger signals. Hence, we are here again with the new amplifier that would be made by the PAM8403 stereo audio amplifier module, having a voltage range from 2.5v to 5.5v and having up to 90 percent efficiency. There is a module of this Ic which particularly works as a Class D audio amplifier.
The best part of this module is that it gives very low noise. Because of these great specifications, we have decided to make the “Simple PAM8403 Amplifier Circuit”
Hardware Components
The following components are required to make Stereo Audio Amplifier Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | PAM8403 | 1 |
| 2. | Potentiometer | 10K, 20k | 1,1 |
| 3. | SMD Capacitor | 0.47uF,1uF,10uF,100uF | 2,1,1,1 |
| 4. | SMD Resistor | 1 Ohm, 10 Ohm, 20 Ohm | 1,1,2 |
| 5. | Connector | 2-Pin, 4-Pin, 5-Pin | 3,1,1 |
PAM8403 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of PAM8403
Stereo Audio Amplifier Circuit
Working Explanation
Connect the Simple PAM8403 Amplifier Circuit according to the diagram given above. The IC has 16 pins. The IC has two channels. Pin 7 is the left channel input. The output of that channel is taken at pin 1 ad 3, pin 1 is the positive output, and pins 3 provides the negative output for the left channel. Similarly, pin 10 is the right channel input. And, Output of that channel is taken at pins 14 ad 16, pin 16 is the positive output, and pin 14 provides the negative output for the left channel. At input channels, there are potentiometers to adjust the audio.
Application and Uses
- For the speaker of monitors, LCD, televisions, etc.
- In portable speakers.
- As DVD player’s speaker.
- In gaming devices as for a speaker, etc.
