8 Watt mono audio power amplifier board. Makes an ideal building block for projects where a low voltage dc powered general Class AB audio amplifier is required.
Circuit uses the proven TDA2003 audio amplifier IC which features zero turn-on transients, wide 8 to 18Vdc supply range, current limiting and thermal protection.
Power output is dependent on the supply voltage & load resistance. Over 10 watts is typical for a 2 Ohm speaker with 16V supply; 9V supply with an 8 Ohm speaker will give about 1W. Volume control potentiometer and heatsink provided.Specifications
|Input Power||8 - 18Vdc, 10 - 20 VA min.|
|Current Consumption||1 Amp minimum (see text)|
|Power output||> 10 W RMS, 2 ohm load, 16V DC supply |
> 6W RMS, 4 ohm load, 16V DC supply
> 4W RMS, 4 ohm load, 12V DC supply
|THD||< 0.2% (1W, 4 ohm load)|
|Gain||20 - 40 dB maximum|
|S/N ratio||> 80 dBA. (G = 20 dB) |
> 60 dBA (G = 40 dB)
|Frequency response||< 20 Hz to > 40 kHz (-3dB, 4 ohm load)|
|Input level||< 100 mV for full output (G = 40 dB) |
< 1V for full output (G = 20 dB)
|Output impedance||2 - 4 Ohms|
|Board Dimensions||~ 50 x 38 mm|
|Board Connections||Screw terminal blocks|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
TDA2003 IC Data Sheet
Amplifier Power Supply General Advice
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