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Introduction:
The TDA7297 is a dual bridge amplifier IC designed specifically for audio amplification in low-power, high-fidelity systems. It is commonly used in DIY audio projects, small speaker systems, and portable audio applications due to its simplicity, low component count, and ability to drive relatively powerful sound at low voltages.The IC TDA7297 has a 15W+15W dual bridge amplifier and is best suited for low power car audio amplifiers. There are many ready-made TDA 7297 amplifier boards available and the prices are also quite affordable. This amplifier IC accepts a wide range of supply voltages from 6V to 18V. The car audio amplifier circuit 15W-15W gives good audio output with minimal external components hence the board size becomes small.
Components Details:
| S.no | Component Name | Value |
|---|---|---|
| 1. | IC | TDA7297 |
| 2. | Capacitor | 10uf/25V |
| 3. | Resistor | 100 ohm |
| 4. | Speaker | 8 ohm |
| 5. | DC Power | 6V-16V |
| 6. | Audio Input | - |
| 7. | Heat Sink | - |
TDA7297 IC Details:
The TDA7297 is a dual bridge amplifier IC designed primarily for audio applications, particularly for low-power, high-fidelity sound systems like small speakers or portable audio equipment. It’s widely used due to its simplicity, ease of use, and low external component count. Here are some key specifications and features:
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Key Specifications:
- Power Supply Voltage: 6V to 18V
- Output Power:
- Up to 15W per channel at 8Ω with a 12V power supply
- Up to 10W per channel at 8Ω with a 9V power supply
- Load Impedance: Typically 4Ω or 8Ω
- Channels: Dual (Stereo)
- Configuration: Bridge tied load (BTL) configuration
- Total Harmonic Distortion (THD): Low (around 1% at maximum power output)
- Mute and Standby functions: Built-in mute and standby functions for better control
- Thermal Protection: It includes thermal shutdown to protect the IC from overheating
- Short Circuit Protection: It’s protected against short circuits
Circuit Diagram:
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Application:
The TDA7297 is widely used in various audio amplification applications due to its simplicity, affordability, and decent performance. Here are some common uses of the TDA7297:
- Portable Speaker Systems:
The TDA7297 is frequently used in small, portable speaker systems due to its compact design and ability to deliver good-quality sound at low power consumption.
It can drive two speakers (stereo setup) with sufficient power output, making it ideal for battery-operated devices. - Computer Speakers:
The amplifier IC is suitable for amplifying audio for desktop and laptop speakers, providing better sound quality than built-in audio components.
It's used in small computer speaker systems that require low power but good clarity and volume. - DIY Audio Projects:
Due to its ease of use and minimal external component requirement, the TDA7297 is popular among electronics hobbyists for building DIY audio systems.
It’s commonly used in homemade speaker projects, audio amplifiers, and other creative sound systems. - Television and Radio Amplifiers:
The IC is used in some low-end or small television and radio systems to amplify sound to the speakers.
It’s useful for small sound systems where high-fidelity sound is needed but at a low cost. - Home Audio Systems:
The TDA7297 can be used in basic home audio setups, driving bookshelf speakers or small home theater systems.
Its dual-channel capability makes it ideal for stereo sound applications.