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TDA7265ST(意法半导体)
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TDA7265 Power amplifier Circuit 2.1
## Overview of the TDA7265 Power Amplifier Circuit 2.1
The TDA7265 is a versatile integrated circuit (IC) designed for audio amplification, particularly suitable for stereo and 2.1 channel applications. This IC can deliver significant power output, making it ideal for home theater systems, car audio setups, and other high-fidelity audio devices.
Details
https://xtronic.org/circuit/amplifier/tda7265-2-1-audio-power-amplifier/
Portuguese
https://te1.com.br/2025/01/tda7265-circuito-amplificador-potencia-2-1/
## Key Features of the TDA7265
- **Power Output**: The TDA7265 can provide up to **25 watts per channel** in stereo mode (at an 8-ohm load) or **50 watts in mono mode** (bridge configuration at a 4-ohm load) [1][3].
- **Operating Voltage**: It operates within a voltage range of **6 to 18 volts**, allowing compatibility with various low-power audio systems.
- **Bridge-Tied Load (BTL) Configuration**: This configuration enables higher output power and eliminates the need for output coupling capacitors, enhancing audio performance and efficiency
- **Audio Quality**: The amplifier is designed to deliver high-quality sound with low total harmonic distortion (THD), ensuring clear audio reproduction
## Circuit Configuration
### 2.1 Channel Setup
In a typical 2.1 amplifier configuration using the TDA7265, two channels are utilized for stereo sound, while a third channel is dedicated to driving a subwoofer. This setup allows for enhanced bass response and overall sound quality, making it suitable for home theater systems.
### Required Components
To build a 2.1 amplifier with the TDA7265, you will need:
- **TDA7265 IC**
- **Power Supply**: Dual supply (±12V to ±18V recommended)
- **Speakers**: Two speakers (8 ohms) for stereo and one subwoofer (4 ohms)
- **Capacitors and Resistors**: As specified in the circuit diagram
- **Heat Sink**: To manage thermal performance
### Circuit Diagram
A simplified circuit diagram typically includes:
- Connections for the power supply
- Input connections for audio signals
- Output connections to speakers
- Necessary passive components for stability and performance
## Advantages of Using TDA7265
- **High Efficiency**: The BTL configuration improves efficiency, allowing more power to be delivered to the speakers without excessive heat generation.
- **Protection Features**: It includes built-in protections against short circuits and thermal overloads, enhancing reliability during operation
- **Mute and Standby Functions**: These features help reduce noise during startup and shutdown phases, providing a better user experience
## Applications
The TDA7265 is commonly used in:
- Home theater systems
- Car audio amplifiers
- Hi-Fi music centers
- General audio amplification needs where quality sound reproduction is desired.
In conclusion, the TDA7265 is a powerful and flexible audio amplifier IC that can effectively drive both stereo speakers and subwoofers in a 2.1 configuration, making it an excellent choice for various audio applications.
[7] https://www.youtube.com/watch?v=nsgNk7DMP1M
[8] https://www.youtube.com/watch?v=Qnmwd4zWDF0
TDA7265 Power amplifier Circuit 2.1
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