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2 x 25Watt Class D Audio Amplifier Board - TDA7492[105]

★★★★★(50 recommends)



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This dual channel Class D amplifier board employs a Triapth-style Texas Instruments TDA7492 chip to achieve efficiency up to 90%. The amplifier is capable of delivering dual-channel amplification with each channel up to 25W. The robust heatsink on board provides enough cooling for most applications. Full protection including over/under voltage protection, over current protection, over temperature protection is adopted to ensure its reliability. Gain control is accomplished by setting two DIP switches, and there are four gain modes available: 24.6 to 26.6 dB, 30.6 to 32.6 dB, 34.1 to 36.1 dB, and 36.6 to 38.6 dB.

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power25
  • Size4.8 x 3.6 inches (121.92mm x 91.44mm)
  • ChipsetTDA749x
  • Heat DissipationHeat Sink
  • Supported Parallel Bridge Tied Load ModeNO
  • inputSingle ended Line-in,
  • Power Voltage14V-19V
  • Output Power
  • 25W@6Ohm 16V DC THD+N 10%
  • 20W@6Ohm 16V DC THD+N 1%
  • Gain Adjustable
  • Block Terminal and Banana (optional)
  • Mute and Standby Control
  • Over current Protection
  • Over temperature Protection
  • Optimized Heatsink Design
  • 4-screw Easy Installation
  • Weight: 309g/ 0.68 lbs
  • Size: 4.80 x 3.60 x 0.94 inches
ParameterConditionsMin.Typ. Max.Units
Power Supply-141619VDC
Idle PowerSTBY Floating-0.560.61W
Standby PowerSTBY Connected to GND-0.0960.1W
Maximum Current 50W @ 6Ohm -3.5-A
Efficiency2 X 25W @6Ω,powered by 16V DC 879093%
Minimum Load Impedance--4-Ω
Switching FrequencyNo Load300 350400KHz
GainSW1 ON, SW2 ON20.621.622.6dB
SW1 ON, SW2 OFF26.627.628.6dB
SW1 OFF, SW2 ON30.131.132.1dB
SW1 OFF, SW2 OFF32.633.634.6dB
Input SensitivityGain 21.6dB1.381.481.58V
Gain 27.6dB0.660.730.80V
Gain 31.1dB0.450.490.53V
Gain 33.6dB0.320.370.42V
Input Impedance-4860-
Output Power@6Ω THD+N 1%-20-W
@6Ω THD+N 10%-25-W
Bandwidth @ -3dB@6Ω, Gain21.6dB20-20K   Hz
THD@6Ω,1W,1KHz, Gain 21.6dB-0.05-%
Output Noise LevelA-weighting, Gain 21.6dB170180190uV
SNR20W @6Ω, THD+N 1%, Gain 21.6dB-91-dB


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