TDA7490

Product Overview

Category

TDA7490 belongs to the category of audio amplifier integrated circuits.

Use

It is primarily used for amplifying audio signals in various electronic devices such as audio systems, home theaters, and portable speakers.

Characteristics

• TDA7490 is a class D amplifier, known for its high efficiency and low power consumption.
• It operates on a single power supply voltage, making it suitable for battery-powered applications.
• The amplifier has built-in protection features like short-circuit protection and thermal shutdown.
• It offers excellent audio quality with low distortion and noise levels.

Package

TDA7490 is available in a compact and industry-standard package, typically in a 20-pin PowerSSO package.

Essence

The essence of TDA7490 lies in its ability to provide efficient and high-quality audio amplification in a compact form factor.

Packaging/Quantity

The TDA7490 is commonly sold individually or in reels containing multiple units, depending on the supplier. The exact quantity may vary.

Specifications

• Supply Voltage: 10V - 36V
• Output Power: Up to 50W per channel
• Total Harmonic Distortion: <0.1%
• Signal-to-Noise Ratio: >90dB
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TDA7490 integrates various pins that serve different functions. Here is a detailed pin configuration:

1. Mute/Standby
2. Non-Inverting Input (Right Channel)
3. Inverting Input (Right Channel)
4. VCC (Positive Power Supply)
5. GND (Ground)
6. Non-Inverting Input (Left Channel)
7. Inverting Input (Left Channel)
8. Thermal Pad
9. Feedback Resistor (Right Channel)
10. Feedback Capacitor (Right Channel)
11. Output (Right Channel)
12. Feedback Resistor (Left Channel)
13. Feedback Capacitor (Left Channel)
14. Output (Left Channel)
15. VCC
16. GND
17. Bootstrap Capacitor
18. Bootstrap Resistor
19. Filter Capacitor
20. Filter Resistor

Functional Features

• High efficiency and low power consumption due to the class D amplifier design.
• Built-in protection features like short-circuit protection and thermal shutdown ensure safe operation.
• Wide supply voltage range allows flexibility in various applications.
• Excellent audio quality with low distortion and noise levels.

Advantages and Disadvantages

Advantages

• High efficiency and low power consumption.
• Compact form factor.
• Good audio quality with low distortion and noise levels.
• Built-in protection features for safe operation.

Disadvantages

• Limited output power compared to higher wattage amplifiers.
• Requires additional external components for proper operation.

Working Principles

TDA7490 operates on the principle of class D amplification. It utilizes pulse width modulation (PWM) to convert the input audio signal into a high-frequency square wave. This square wave is then filtered and amplified to produce the final audio output.

The class D design ensures high efficiency by rapidly switching the output transistors between fully on and fully off states, minimizing power dissipation. This results in less heat generation and increased battery life in portable applications.

Detailed Application Field Plans

TDA7490 finds applications in various audio amplification scenarios, including: 1. Home audio systems 2. Portable speakers 3. Car audio systems 4. Multimedia devices 5. Professional audio equipment

Detailed and Complete Alternative Models

Some alternative models to TDA7490 that offer similar functionality include: - TPA3116D2 - STA516B - IRS2092S - TDA7498E

These models provide comparable features and can be considered as alternatives based on specific requirements.

In conclusion, TDA7490 is a class D audio amplifier integrated circuit that offers high efficiency, low power consumption, and excellent audio quality. Its compact form factor and built-in protection features make it suitable for various applications in the audio amplification field.