The PAM8403 is a 2-channel, 3W, class-D audio amplifier module that features low harmonic distortion and high efficiency. It offers low THD+N, allowing it to achieve high-quality sound reproduction. Operating voltage for this module range from 2.5 V to 5.5 V, making it ideal for adding the audio capability to your MP3 and MP4 player projects.
PAM8403 Module Pinout Configuration
Pin No.
Pin Name
Description
1
+OUT_L
Left Channel Positive Output
2
-OUT_L
Left Channel Negative Output
3
INL
Left Channel Input
4
INR
Right Channel Input
5
-OUT_R
Right Channel Negative Output
6
+OUT_R
Right Channel Positive Output
7
5V
Positive Supply
8
GND
Ground Pin
Specifications
2 channels 3 W PAM8403 audio amplifier
Output Power: 3 W + 3 W (at 4 ohm)
Working Voltage: 2.5 to 5.5 V
Board Size: 24 x 15 mm
High amplification efficiency 85{7e82c6d62784066d1b113f595afb6e15f0ca3fec289cddd29e600df910d44428}
Unique without LC filter class D digital power board
Can use computer USB power supply directly
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