TDA7491P

Overview

Product Category

TDA7491P belongs to the category of audio amplifier integrated circuits (ICs).

Use

This IC is primarily used for amplifying audio signals in various applications such as home theater systems, portable speakers, and automotive audio systems.

Characteristics

• Power Output: TDA7491P can deliver up to 25 watts per channel into a 6-ohm load with a 24V power supply.
• Efficiency: It offers high efficiency, resulting in low power dissipation and reduced heat generation.
• Low Distortion: The IC ensures low distortion levels, providing clear and accurate audio reproduction.
• Protection Features: TDA7491P incorporates protection mechanisms like over-temperature, over-voltage, and short-circuit protection, enhancing its reliability and durability.

Package and Quantity

The TDA7491P IC is available in a compact and industry-standard package known as PowerSSO-36. It consists of a single chip enclosed in a plastic casing. Typically, it is sold individually or in reels containing multiple units.

Essence

The essence of TDA7491P lies in its ability to amplify audio signals efficiently while maintaining low distortion levels, making it suitable for high-quality audio applications.

Specifications

• Supply Voltage Range: 10V - 36V
• Total Harmonic Distortion (THD): <0.1%
• Signal-to-Noise Ratio (SNR): >90dB
• Operating Temperature Range: -40°C to 85°C
• Output Impedance: 6 ohms
• Input Sensitivity: 500mV

Pin Configuration

The TDA7491P IC has a total of 36 pins, which are assigned specific functions. Here is a detailed pin configuration:

1. Mute/Standby
2. IN1-
3. IN1+
4. GND
5. VCC
6. PVCC
7. OUT1
8. OUT2
9. OUT3
10. OUT4
11. OUT5
12. OUT6
13. OUT7
14. OUT8
15. OUT9
16. OUT10
17. OUT11
18. OUT12
19. OUT13
20. OUT14
21. OUT15
22. OUT16
23. OUT17
24. OUT18
25. OUT19
26. OUT20
27. OUT21
28. OUT22
29. OUT23
30. OUT24
31. OUT25
32. OUT26
33. OUT27
34. OUT28
35. OUT29
36. OUT30

Functional Features

• High-Fidelity Audio Amplification: TDA7491P provides excellent audio amplification with low distortion, ensuring accurate sound reproduction.
• Wide Voltage Range: It can operate within a wide supply voltage range, making it suitable for various power sources.
• Protection Mechanisms: The IC incorporates protection features like over-temperature, over-voltage, and short-circuit protection, safeguarding the amplifier and connected devices.
• Compact Size: TDA7491P's compact package allows for easy integration into space-constrained audio systems.

Advantages and Disadvantages

Advantages

• High efficiency and low power dissipation
• Low distortion levels for clear audio reproduction
• Protection mechanisms enhance reliability
• Compact size for easy integration

Disadvantages

• Limited power output compared to higher wattage amplifiers
• Requires additional components for a complete audio system setup

Working Principles

TDA7491P operates as a class D amplifier, utilizing pulse-width modulation (PWM) techniques. It converts the input audio signal into a series of high-frequency pulses, which are then amplified and filtered to reconstruct the original audio waveform. This approach ensures efficient power utilization and low heat generation.

Application Field Plans

TDA7491P finds applications in various audio systems, including: - Home theater systems - Portable speakers - Automotive audio systems - Multimedia soundbars - Computer speakers

Alternative Models

Here are some alternative models that offer similar functionality to TDA7491P: - TPA3116D2 - STA540 - LM3886 - IRS2092

These alternatives can be considered based on specific requirements and design considerations.

In conclusion, TDA7491P is a versatile audio amplifier IC that offers high efficiency, low distortion, and protection features. Its compact size and wide voltage range make it suitable for a range of audio applications. However, it has limitations in terms of power output compared to higher wattage amplifiers.