Fermion 3W Mini Audio Stereo Amplifier

The Fermion 3W Mini Audio Stereo Amplifier from DFRobot is a class D amplifier with the PAM8403 for two channels. It drives two speakers with up to 3 W each into 4 Ω at 5 V and works without programming: the audio signal goes to LIN and RIN, the speakers to L+/L- and R+/R-. The connections have a 2.54 mm pitch, for pin headers or wires soldered directly. The SHDN pin puts the amplifier into standby.

Important: Do not reverse plus and minus of the supply. The minus terminals of the two speakers (L- and R-) are separate and must not be connected to each other. The supply must not exceed 5.5 V, a higher voltage destroys the chip.

Recommended Accessories:

• 3W 8Ohm Speaker in Housing
• Speaker 4Ohm 3W 50mm
• Audio Breakout Board TRRS 3.5mm Jack Stereo

Features:

• PAM8403 amplifier chip, class D, efficiency over 90 %
• Two channels for stereo, up to 3 W each into 4 Ω at 5 V
• Standby with SHDN at LOW, open or HIGH the amplifier is active
• Inputs and supply on one side, speakers on the other
• Connections with 2.54 mm pitch, two mounting holes

Application Examples:

• Voice output for robots
• Speakers on an MP3 module such as the DFPlayer mini
• Self-built music boxes and sound modifications

Documentation:

• Wiki DFRobot DFR0119-O with pinout

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0119-O
• Amplifier chip: PAM8403, class D
• Supply: 3.3 V to 5.5 V DC
• Output power: 2 × 3 W into 4 Ω at 5 V
• Efficiency: over 90 %
• Connections: LIN, GND, RIN, VCC, GND, SHDN and L+, L-, R-, R+
• Pitch: 2.54 mm
• Dimensions: 20 × 18 × 3 mm
• Weight: 7.6 g

Scope of Delivery:

• 1× Fermion 3W Mini Audio Stereo Amplifier