TDA2003 Bridge Amplifier 18W Circuit - Tronicspro

Introduction

An amplifier is an essential component in any audio system. It is responsible for intensifying the low-level signals from sources such as microphones, CD players, and turntables into high-level signals that can drive loudspeakers. The TDA2003 Bridge Amplifier that delivers about 18W of power into an 8-ohm load. It is a cost-effective and high-performance solution for those who want to build small audio amplifiers for home or car audio applications. In this article, we will discuss the TDA2003 Bridge Amplifier in detail and understand its operation, specifications, and applications.

The TDA2003 Bridge Amplifier is a monolithic integrated circuit that operates in a Bridge-Tied Load (BTL) configuration. It consists of a pair of complementary NPN-PNP bipolar power transistors that are driven by a signal pre-amplifier. The Bridge-Tied Load configuration eliminates the need for an output coupling capacitor, which helps to reduce the cost and size of the amplifier. The TDA2003 Bridge Amplifier can operate from a single supply voltage between 8V to 18V, making it ideal for car audio applications.

Circuit Diagram

of TDA2003 Bridge Amplifier 18W

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Features and Specifications

of TDA2003 Bridge Amplifier 18W

The TDA2003 Bridge Amplifier has several features and specifications that make it a popular choice among DIY audio enthusiasts. Some of the notable features and specifications are:

Maximum Output Power: The TDA2003 can deliver a maximum output power of 18W into an 8-ohm load. This power rating is sufficient for small to medium-sized rooms.
High Efficiency: The TDA2003 has a high efficiency of up to 65%, which means it wastes less power as heat and produces more power to drive the loudspeaker.
Thermal Protection: The TDA2003 has built-in thermal protection that shuts down the amplifier when the temperature exceeds a safe operating limit.
Low Distortion: The TDA2003 has a low distortion of less than 0.5%, which means the amplified signal is faithful to the original source without any significant coloration.

Applications

The TDA2003 Bridge Amplifier finds its applications in various audio systems where cost, size, and performance are critical factors. Some of the applications are:

Home Audio Systems: The TDA2003 Bridge Amplifier can be used to build small amplifiers for home audio systems that deliver sufficient power to drive bookshelf or tower speakers.
Car Audio Systems: The TDA2003 Bridge Amplifier can be used to build amplifiers for car audio systems that operate from a single battery voltage and deliver a high-quality sound.
Portable Audio Systems: The TDA2003 Bridge Amplifier can be used to build portable audio systems such as boomboxes or Bluetooth speakers that are lightweight, compact, and battery-powered.

Conclusion

of TDA2003 Bridge Amplifier 18W

The TDA2003 Bridge Amplifier 18w is a cost-effective and high-performance solution for small audio amplifiers used in home, car, or portable audio systems. It can deliver up to 18W of power into an 8-ohm load and operate from a single supply voltage between 8V to 18V. The Bridge-Tied Load configuration eliminates the need for an output coupling capacitor, which reduces the cost and size of the amplifier. The TDA2003 has built-in thermal protection and low distortion, making it a reliable and high-quality amplifier for various audio applications. Whether you are an audio enthusiast or a DIY hobbyist, the TDA2003 Bridge Amplifier is an excellent choice for your audio projects.