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AS3047KT - 8W Mono Power Amplifier (TDA2003)

Ability Level 2: ModerateProduct Formats Available : Pre-Assembled Module (AS) or
Self-Assembly Electronic Kit ( Soldering Required)

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.

Input Power8 - 18Vdc, 10 - 20 VA min.
Current Consumption1 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)
Gain20 - 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 impedance2 - 4 Ohms
Board Dimensions~ 50 x 38 mm
Board ConnectionsScrew terminal blocks
Control KnobKB0410
Product FormatsSELF-ASSEMBLY Electronic Kit (KT) or
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
TDA2003 IC Data Sheet
Amplifier Power Supply General Advice