TDA7389A

Overview

Product Category

TDA7389A belongs to the category of integrated circuits (ICs) specifically designed for audio amplification.

Use

The TDA7389A is primarily used in automotive audio systems, where it serves as a power amplifier for driving speakers.

Characteristics

• High output power capability
• Low distortion and noise levels
• Wide frequency response range
• Built-in protection features against short-circuits, thermal overload, and overvoltage

Package

The TDA7389A is available in a multiwatt15 package, which consists of a 15-lead plastic power package.

Essence

The essence of the TDA7389A lies in its ability to amplify audio signals with high fidelity and efficiency, providing clear and powerful sound reproduction in automotive environments.

Packaging/Quantity

The TDA7389A is typically sold in reels or tubes, containing a specified quantity of ICs per package. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 8V to 18V
• Output Power: Up to 4 x 45W
• Total Harmonic Distortion: <0.5%
• Signal-to-Noise Ratio: >90dB
• Operating Temperature Range: -40°C to +105°C

Pin Configuration

The TDA7389A features a 15-pin configuration, as follows:

1. Mute
2. Standby
3. Input 1
4. Input 2
5. Input 3
6. GND (Ground)
7. Output 1
8. Output 2
9. Output 3
10. VCC (Supply Voltage)
11. Output 4
12. Input 4
13. Input 5
14. Input 6
15. VS (Supply Voltage)

Functional Features

• Four independent amplification channels
• Built-in mute and standby functions for power management
• Selectable gain settings for each channel
• Short-circuit protection with automatic restart
• Thermal overload protection
• Overvoltage protection

Advantages and Disadvantages

Advantages

• High output power capability allows for loud and clear audio reproduction.
• Low distortion and noise levels ensure high-quality sound.
• Wide frequency response range covers the entire audible spectrum.
• Built-in protection features safeguard the amplifier and connected speakers.

Disadvantages

• Limited to automotive audio applications, not suitable for other audio amplification needs.
• Requires an external power supply within the specified voltage range.

Working Principles

The TDA7389A operates on the principle of amplifying low-power audio signals received from a source, such as a car stereo head unit. It utilizes internal circuitry to boost the signal strength while maintaining fidelity and minimizing distortion. The amplified signals are then sent to the respective speaker outputs.

Detailed Application Field Plans

The TDA7389A is primarily designed for use in automotive audio systems, including car stereos and infotainment systems. Its high output power capability makes it suitable for driving various types of speakers, ranging from small tweeters to larger woofers. The built-in protection features ensure reliable operation even in challenging automotive environments.

Detailed and Complete Alternative Models

1. TDA7377: A similar audio power amplifier IC with lower output power but compatible pin configuration.
2. TDA7850: An alternative IC offering higher output power and additional features like built-in digital sound processing.

These alternative models can be considered based on specific requirements and system design considerations.

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