3047 - 8W Mono Amplifier (TDA2003)

This 8 Watt mono audio 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.

Technical Specifications
Power Supply	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
Control Knob	KB0561
Product Formats	SELF-ASSEMBLY Electronic Kit (KT ) or PRE-ASSEMBLED Electronic Module (AS) more
Documentation	User Manual TDA2003 IC Data Sheet Amplifier Power Supply General Advice