7 Watt Audio Amplifier with IC TDA2003

By | September 3, 2009

This is an amplifier circuit with gain music output power up to 7W. Use IC TDA2003 as main component, this circuit is small but powerful multi purpose amplifier.

7 Watt Audio Amplifier with IC TDA2003 circuit diagram

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

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     : 470
R2     : 4.7
R3     : 100
R4     : 1
C1     : 8n2 (822)
C2,C3  : 100nF (104;0.1μ;.1μ)
C4     : 10μF/25V
C5     : 470μF/25V
C6, C7 : 1000μF/25V
IC     : 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:

Download TDA2003 Datasheet Document:

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

7W Amplifier TDA2003 Kit

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7 Watt Audio Amplifier with IC TDA2003 was last modified: September 8th, 2014 by circuit diagram

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