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TDA2005- 20 Watt Bridge/Stereo Amplifier IC

TDA2005 is a 20 Watt audio amplifier IC, a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications. Because of high current capability (up to 3.5Amp) the chip can be used to design Power booster amplifiers easily. It can drive very low impedance loads (down to 1.6Ω in stereo applications) obtaining an output power of more than 20 W (bridge configuration).


TDA2005 Pin Configuration

TDA2005 is an 11 pin device as shown in pin diagram and function of each pin is described below.

Pin Number

Pin Name




Non-Inverting Input of amplifier 1



Inverting Input of amplifier 1



Supply Voltage Rejection Ratio



Inverting Input of amplifier 2



Non-Inverting Input of amplifier 2






Bootstrap capacitor for amplifier 2



Output of amplifier 2



Positive Power Supply



Output of amplifier 1



Bootstrap capacitor for amplifier 1


Features and Electrical Characteristics

  • High output power : Po=10 + 10 W @ RL = 2 Ω, Po = 20 W @ RL = 4 Ω
  • Output short circuit protection
  • Overheat protection
  • Featured with protection against load dump voltage surge
  • Loudspeaker protection during short circuit forone wire to ground
  • Featured with protection against fortuitous open ground
  • Programmable gain and bandwidth
  • Very low number of components required to get the amplifier working
  • Operating voltage range: +8 to +18V
  • Maximum supply voltage:+28V
  • Peak supply voltage: +40V for 50ms
  • Maximum repetitive current allowed to draw through each output: 3.5A
  • Maximum non-repetitive peak current allowed to draw through each output: 4.5A
  • Featured with Bridge or Stereo setup
  • Total power dissipation: 30W
  • Operating temperature: -23°C  to 130°C
  • Storage Temperature: -40°C  to 150°C


Note: Complete technical details can be found in the TDA2005 Datasheet linked at the bottom of this page.


TDA2005 IC Overview

TDA2005 is basically used in applications where audio power amplification is required. The chip has adjustable gain for it to be used in music players and radios. With high power output capacity, the chip is used for driving loud speakers and woofers. TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications.


How to use TDA2005 IC

The usage of TDA2005 chip is really easy. All you need to do is connect the components as given in the circuit diagram to get the amplifier working. The application circuit diagram for TDA2005 IC is already given in the datasheet of the component. Since the application circuit is optimized for best performance using it in applications is ideal.

TDA2005 Bridge Amplifier Circuit Diagram

The above circuit is the bridge amplifier circuit designed for TDA2005. The circuit can be connected directly without any further testing. Here the chip drives a single 20 Watt speaker to its peak. In bridge amplification circuit we will have voltage gain up to 50dB.

TDA2005 Stereo Amplifier Circuit Diagram

The above circuit is stereo amplifier circuit designed for TDA2005. This circuit is also tested for working and can be used in applications directly. In this circuit the chip drives two 10 Watt speakers to their peak. In stereo amplification we will have a maximum voltage gain of 51dB.



  • Audio power amplifiers
  • Car radio
  • Music players
  • Woofer amplifiers
  • Microphone amplifiers


2D Model and Dimensions

TDA2005 IC Dimensions

Component Datasheet

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