TDA7850H

Overview

Product Category

TDA7850H belongs to the category of integrated circuits (ICs) specifically designed for audio amplification.

Use

The TDA7850H is primarily used in automotive audio systems, providing high-quality sound amplification for car speakers.

Characteristics

• High power output: The TDA7850H is capable of delivering up to 50 watts per channel, ensuring a powerful and clear audio experience.
• Low distortion: This IC offers low harmonic distortion, resulting in accurate reproduction of audio signals.
• Wide voltage range: The TDA7850H can operate within a wide voltage range, making it suitable for various automotive applications.
• Thermal protection: It includes built-in thermal protection mechanisms to prevent overheating and ensure safe operation.

Package and Quantity

The TDA7850H is available in a multiwatt15 package, which consists of a 15-pin plastic power package. It is commonly sold individually or in reels of multiple units.

Specifications

• Power supply voltage: 8V - 18V
• Output power: 50W per channel (max)
• Total harmonic distortion: < 0.5%
• Operating temperature range: -40°C to +105°C
• Package dimensions: 15-pin multiwatt15 package

Pin Configuration

The TDA7850H features a 15-pin configuration with the following pin assignments:

1. MUTE
2. IN1-
3. IN1+
4. GND
5. VCC
6. OUT1
7. OUT2
8. OUT3
9. OUT4
10. OUT5
11. OUT6
12. OUT7
13. OUT8
14. BOOT
15. VS

Functional Features

• High-efficiency class AB amplifier: The TDA7850H utilizes a class AB amplifier design, combining the efficiency of class B amplifiers with the low distortion characteristics of class A amplifiers.
• Bridge-tied load (BTL) configuration: It supports the BTL configuration, allowing for increased power output when driving subwoofers or other low-impedance speakers.
• Short-circuit protection: The IC incorporates short-circuit protection to safeguard against potential damage caused by accidental short circuits.
• Standby mode: The TDA7850H includes a standby mode, reducing power consumption when the audio system is not in use.

Advantages and Disadvantages

Advantages

• High power output capability
• Low distortion for accurate sound reproduction
• Wide operating voltage range
• Built-in thermal protection
• Supports bridge-tied load configuration

Disadvantages

• Limited pin configuration options
• Requires additional external components for a complete audio system implementation

Working Principles

The TDA7850H operates as an audio amplifier by receiving audio signals from the input pins (IN1+ and IN1-) and amplifying them to drive the corresponding output pins (OUT1 to OUT8). It employs a class AB amplifier design, which combines the efficiency of class B amplifiers with the low distortion characteristics of class A amplifiers. The IC also includes various protection mechanisms such as thermal protection and short-circuit protection to ensure safe and reliable operation.

Application Field Plans

The TDA7850H is primarily designed for automotive audio systems, making it suitable for a wide range of applications, including: - Car stereo systems - Car multimedia systems - Aftermarket audio upgrades - Car audio amplifiers

Alternative Models

For those seeking alternative options, several other integrated circuits can be considered as replacements or alternatives to the TDA7850H. Some notable alternatives include: - TDA7560: Similar power output and features, but with a different pin configuration. - TDA7377: Lower power output, but suitable for smaller audio systems. - TDA7851: Higher power output variant of the TDA7850H.

These alternative models offer similar functionality and can be chosen based on specific requirements and system constraints.

In conclusion, the TDA7850H is a high-performance audio amplifier IC designed for automotive applications. With its high power output, low distortion, and built-in protection mechanisms, it provides an excellent solution for enhancing the audio experience in car audio systems.