TDA7391

Product Overview

Category

TDA7391 belongs to the category of integrated circuits (ICs) specifically designed for audio amplification.

Use

The TDA7391 is primarily used in audio systems to amplify low-power audio signals and drive speakers with higher power output.

Characteristics

• Power Supply: The TDA7391 operates on a single power supply voltage ranging from 8V to 18V.
• Output Power: It can deliver up to 45W of continuous power per channel, making it suitable for medium-sized audio systems.
• Low Distortion: The IC offers low distortion and high signal-to-noise ratio, ensuring high-quality audio reproduction.
• Thermal Protection: It incorporates thermal protection circuitry to prevent overheating and damage to the device.
• Short-Circuit Protection: The TDA7391 includes built-in short-circuit protection to safeguard against potential damage caused by speaker or wiring faults.

Package

The TDA7391 is available in a multiwatt package, which provides efficient heat dissipation and ease of installation.

Essence

The essence of the TDA7391 lies in its ability to amplify weak audio signals while maintaining sound fidelity and protecting itself from potential hazards.

Packaging/Quantity

The TDA7391 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 8V to 18V
• Output Power: Up to 45W per channel
• Total Harmonic Distortion: <0.5%
• Signal-to-Noise Ratio: >90dB
• Operating Temperature Range: -40°C to +150°C
• Package Type: Multiwatt

Detailed Pin Configuration

The TDA7391 features a 15-pin configuration:

1. Mute/Standby
2. Non-Inverting Input Channel 1
3. Inverting Input Channel 1
4. Non-Inverting Input Channel 2
5. Inverting Input Channel 2
6. Bootstrap Capacitor Channel 1
7. Output Channel 1
8. Ground
9. Power Supply Voltage
10. Bootstrap Capacitor Channel 2
11. Output Channel 2
12. Thermal Protection
13. Short-Circuit Protection
14. VCC
15. Mute/Standby

Functional Features

• Dual-Channel Amplification: The TDA7391 provides independent amplification for two audio channels, allowing stereo sound reproduction.
• Mute/Standby Functionality: It includes a mute/standby pin that can be used to silence or activate the amplifier as required.
• Thermal and Short-Circuit Protection: The IC incorporates protection mechanisms to prevent damage due to excessive heat or short-circuits.

Advantages and Disadvantages

Advantages

• High output power capability
• Low distortion for improved audio quality
• Built-in thermal and short-circuit protection
• Compact package for easy integration

Disadvantages

• Limited voltage supply range (8V to 18V)
• May require additional external components for optimal performance

Working Principles

The TDA7391 operates on the principle of class AB amplification. It utilizes a combination of transistors and integrated circuitry to amplify weak audio signals received at its input pins. The amplified signals are then delivered to the corresponding output channels, driving connected speakers with increased power.

Detailed Application Field Plans

The TDA7391 finds applications in various audio systems, including: - Home theater systems - Car audio systems - Portable speakers - Professional audio equipment

Detailed and Complete Alternative Models

Some alternative models to the TDA7391 include: - TDA7377 - TDA7265 - TDA2030A - LM3886

These alternatives offer similar functionality and can be used as replacements or substitutes for the TDA7391 in audio amplification applications.

In conclusion, the TDA7391 is a versatile integrated circuit designed for audio amplification. With its high output power, low distortion, and built-in protection features, it serves as a reliable choice for various audio systems.