This is an amplifier circuit with gain music output power up to 7W. It uses IC TDA2003 as main component. This 7 watt audio amplifier circuit is small but powerful multi purpose amplifier.

7 Watt Audio Amplifier with IC TDA2003

IC TDA2003 provides a high output current capability (up to 3.5A) very low harmonic and cross-over
distortion.

Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range, load dump voltage surge up to 40V and fortuitous open ground.

Components List:

R1 : 470R2 : 4.7R3 : 100R4 : 1C1 : 8n2 (822)C2,C3 : 100nF (104;0.1?;.1?)C4 : 10?F/25VC5 : 470?F/25VC6, C7 : 1000?F/25VIC : TDA2003

Amplifier Specifications:

  • Power output: 7W / 4ohm
  • RMS output: 3.5W / 4ohm or 2W / 8ohm
  • Total harmonic distortion: 0.05% (1W / 1kHz)
  • Frequency response: 20Hz to 20kHz (-3dB)
  • Signal/noise ratio: 86dB (A weighted)
  • Input sensitivity: 40mV / 150Kohm
  • Overload and short-circuit protected
  • Supply voltage: 15V DC (8 to 18V DC possible) / 0.5A

Download the detail circuit, schematic diagram and component part of this “7 Watt Audio Amplifier with IC TDA2003” in PDF version:
7W Amplifier Circuit TDA2003 223.87 KBDownload Circuit Manual

Download TDA2003 Datasheet Document:
TDA2003 datasheet 154.26 KBDownload Datasheet

The kit version of 7 Watt audio amplifier with IC TDA2003:

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