TDA7481

Product Overview

Category

TDA7481 belongs to the category of audio amplifier integrated circuits.

Use

The TDA7481 is primarily used for amplifying audio signals in various electronic devices such as audio systems, home theaters, and car audio systems.

Characteristics

• The TDA7481 is a class D amplifier, which means it operates with high efficiency and low power dissipation.
• It has a wide operating voltage range, typically from 8V to 26V, making it suitable for different power supply configurations.
• This amplifier offers high-quality audio reproduction with low distortion and noise levels.
• It supports stereo output, allowing for a more immersive audio experience.
• The TDA7481 is designed to be compact and lightweight, making it easy to integrate into different applications.

Package

The TDA7481 is available in a small outline package (SOP) or a power package (POWERSO).

Essence

The essence of the TDA7481 lies in its ability to provide efficient and high-quality audio amplification in a compact form factor.

Packaging/Quantity

The TDA7481 is typically sold in reels or tubes, with quantities varying depending on the manufacturer's packaging specifications.

Specifications

• Power Supply Voltage: 8V to 26V
• Output Power: Up to 25W per channel
• Total Harmonic Distortion: <0.1%
• Signal-to-Noise Ratio: >90dB
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The TDA7481 has a total of 20 pins, each serving a specific function. Here is a detailed pin configuration:

1. VCC: Power supply positive terminal
2. GND: Ground reference
3. IN1: Input 1
4. IN2: Input 2
5. MUTE: Mute control input
6. STBY: Standby control input
7. VCC: Power supply positive terminal
8. GND: Ground reference
9. OUT1: Output 1
10. OUT1: Output 1
11. OUT2: Output 2
12. OUT2: Output 2
13. VCC: Power supply positive terminal
14. GND: Ground reference
15. FILT: Filter capacitor connection
16. FILT: Filter capacitor connection
17. FILT: Filter capacitor connection
18. FILT: Filter capacitor connection
19. GND: Ground reference
20. VCC: Power supply positive terminal

Functional Features

• High efficiency and low power dissipation due to its class D amplifier design.
• Built-in protection features such as over-temperature, over-voltage, and short-circuit protection.
• Supports both single-ended and bridge-tied load (BTL) configurations for flexible system integration.
• Low external component count, simplifying the overall circuit design.
• Thermal shutdown feature prevents damage from excessive heat.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Compact size allows for easy integration into various applications.
• Excellent audio quality with low distortion and noise levels.
• Built-in protection features enhance reliability and durability.
• Flexible configuration options support different system requirements.

Disadvantages

• Limited output power compared to higher wattage amplifiers.
• May require additional heat sinking for prolonged high-power operation.
• Not suitable for applications requiring extremely low distortion levels.

Working Principles

The TDA7481 operates on the principle of pulse width modulation (PWM). It converts the incoming analog audio signal into a digital PWM signal, which is then amplified by the power stage. The amplified PWM signal is then filtered to remove the high-frequency components, resulting in a high-quality amplified audio signal.

Detailed Application Field Plans

The TDA7481 finds applications in various audio amplification systems, including: - Home audio systems - Car audio systems - Portable speakers - Multimedia devices - Professional audio equipment

Detailed and Complete Alternative Models

• TDA7492: Similar class D audio amplifier with higher output power.
• TPA3116D2: Class D amplifier with integrated audio processing features.
• LM3886: Class AB amplifier with higher output power and lower distortion levels.

These alternative models offer different specifications and features, providing options for various audio amplification requirements.

In conclusion, the TDA7481 is a compact and efficient class D audio amplifier integrated circuit. It offers high-quality audio amplification with low distortion and noise levels. With its versatile application possibilities and built-in protection features, it serves as an excellent choice for audio amplification in a wide range of electronic devices.