This small amplifier is constructed around the TDA2003 IC, capable of delivering 4W RMS at 4 ohms. The IC is completely thermally and short-circuit protected. A conventional direct current can be connected as supply.
Specifications:
Music power output: 7 W / 4 ohm
RMS output: 3.5 W / 4 ohm or 2 W / 8 ohm
Total harmonic distortion: 0.05% (1 W / 1 kHz)
Frequency response: 20 Hz to 20 kHz (-3 dB)
Signal/noise ratio: 86 dB (A weighted)
Input sensitivity: 40 mV / 150 Kohm
Overload and short-circuit protected
Supply voltage: 15 VDC (8 to 18 VDC possible) / 0.5 A