Friday, October 07, 2011

2X25Watt TPA3123 Class-D Audio Amplifier Board

As a new member of class-D amplifier series, this 2*25W amplifier board employs TPA3123D2 chip from TI. It supports dual channel amplification and each such channel is rated at 25W which helps producing state-of-the-art sound quality. The efficiency of the TPA3123D2 eliminates the need for an external heat sink when playing music. Besides, integrating high-quality SMD and MKP plug-in capacitors ensures Hi-Fi amplification output.

This amplifier can readily be powered by any DC power supply ranging from +10 to 30V. You can use it to drive any 4Ω or 8Ω passive speakers.


Size: 110.02 (L) X 68.60 (W) X 16.00 (H) ±0.2mm
Perfect "Class D" architecture
Half-bridged stereo output or Fully-bridged mono output
Wide power supply range: +10V-30V
Mounting holes facilitate installation and fixing
Several wiring methods facilitate connection
Two kinds of input: line level input and analog audio input
Power the board via socketJ11 or the wiring terminal (J10)
Excellent design of the power ports which allows you to cascade multiple amplifier boards (max 4 recommended)
requency response: 20Hz-20KHz(±3dB)
Signal/Noise Ratio: 100dB(A Weighted)
High Output Power
10W @ 8Ω, < 10.0% THD+N
25W @ 4Ω, < 10.0% THD+N

High Efficiency
92% @ 8W 8Ω
85% @ 16W 4Ω

Audiophile Quality Sound
0.08% THD+N @ 5W 8Ω
0.08% THD+N @ 10W 4Ω

Sensitivity and gain adjustable
Over/under voltage turn off
Over current protection
Over temperature protection
Over 90% components are SMT based, which are reliable and environment-friendly
Ideal for DIY and industrial applications
Could be bridged

  • Active Subwoofers
  • Home Theater Receiver
  • Multi-channel Distribution
  • Active DVD System
  • Mini/Micro System