TDA2003 10W Audio Amplifier

TDA2003 10W Audio Amplifier
TDA2003 10W Audio Amplifier
TDA2003 Pinout
TDA2003 10W Audio Amplifier
TDA2003 Pinout

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The TDA2003 is an Audio Amplifier IC from ST Microelectronics with a maximum output power of 10W commonly used in stereo amplification in car Radio. The IC can output a maximum current of 3.5A and features very low harmonic and crossover distortion.


Pin Description

Pin Number

Pin Name



Non – Inverting Input

Non inverting end (+) of Amplifier


Inverting Input

Inverting end (-) of Amplifier



Connect to the ground of the circuit



This pin outputs the amplified signal


Supply Voltage

Supply voltage, Minimum 6V and Maximum 36V



  • Low-frequency class AB amplifier most suited for audio amplification
  • Can provide up to 20 Watts as output power
  • Operating Voltage: 8V to 18V
  • Maximum output power 12V (at 1.6Ω RL)
  • Voltage Gain: 80dB
  • Supply Voltage rejection: 36dB
  • Short circuit and thermal protection is available
  • Breadboard friendly
  • Available in 5-pin TO220 package

Note: Complete Technical Details can be found at the datasheet give at the end of this page.


Alternative to TDA2003: TDA2009

Other Audio Amplifiers: LM386, TDA1554, TDA2030, TDA7294, TDA7265, TDA7279, TDA2005


Introduction to TDA2003

TDA2003 is a general-purpose 10W amplifier IC that can be used in stereo or mono audio design circuits.   The amplifier can output upto 3.5A current to drive speakers and can also handle high current upto 5A for shorter duration without any damage. It can also handle short circuits in both AC and DC rail without killing itself. It has an operating voltage of 18V but can handle high voltage up to 28V. This makes it robust to be used in automotive audio designs.

The TDA2030 is breadboard friendly and hence can be easily tested using a breadboard. A sample application circuit for TDA2030 is given below. The datasheet given at the bottom of this page consists of more details on this design.

Circuit using TDA2003 10W Audio Amplifier


TDA2003 is a 5-pin Amplifier IC. The pin 5 and 3 are used to power the Amplifier IC, and the audio signal to be amplified is given in through pin 1 which is the non-inverting input. The amplified audio output can be obtained through pin 4. The values of the components given above are the values recommended by manufactures. The two important components are the Cx and Rx which sets the bandwidth for the amplifier using the formulae shown above. Also the Resistors R1 and R2 are used doe setting the gain of the amplifier.



  • Used for Audio signal Amplification
  • Suitable for high power amplification
  • Capable of operating on dual/split power supply
  • Can be used to cascade audio speakers


2-D Model (PDIP)

TDA2003 10W Audio Amplifier 2D-Model

TDA2003-10W Audio Amplifier Dimension

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