Checkout the Pinout, Circuit diagram and Features of TDA7294 Class AB Audio amplifier IC. Additional details are given below. Carefully read the points before going to build an amplifier for a Car audio amplifier or Home Hi Fi system.
Introduction
The TDA7294 is a powerful audio amplifier IC. Most common in subwoofer amplifier systems. This IC is a Class AB audio amplifier chip designed for high power audio output requirements.
Semiconductor chip is manufactured by STMicroelectronics. The IC is well designed in a small packaging and delivers maximum audio output to the speakers. So this audio amplifier IC is suitable for High fidelity audio systems.
TDA7294 Pinout Description
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | Stand By GND | Output connected to ground. |
| 2 | Inverting Input | Inverting input. |
| 3 | Non Inverting Input | Non inverting input. |
| 4 | SVR | Supply Voltage Rejection for ripple or noise rejection. |
| 5 | N.C. | Not connected. |
| 6 | Bootstrap | Used to step up charge. |
| 7 | + Supply | Positive supply. |
| 8 | -vs | Negative supply . |
| 9 | Stand by | Standby control pin for low power mode. |
| 10 | Mute | Disables audio output. |
| 11 | N.C. | Not connected. |
| 12 | N.C. | Not connected. |
| 13 | +Vs Power | Positive power supply. |
| 14 | Out | Output pin. |
| 15 | -vs | Negative power supply. |
TDA7294 Circuit Diagram
Technical Features of TDA7294
- Operating Voltage Range: ±40V
- Output Power: Up to 100W (music power)
- Muting/Standby Functions: Yes
- Switch On/Off Noise: No
- Boucherot Cells: No
- Distortion: Very low
- Noise Level: Very low
- Protection Features like Short Circuit Protection and Thermal Shutdown
Operating Condition and Power Requirements
The TDA7294 IC operating supply voltage ranging from ±14V to ±35V. The IC can deliver up to 100W of output power into a 4Ω speaker. The frequency response of the IC is 20 Hz to 20 kHz. The chip is suitable for use with load impedances between 4Ω and 8Ω, and it can function effectively within a temperature range of -25°C to +85°C at the junction level.
Typical Application of TDA7294
- Car Audio Amplifier.
- Building High quality Subwoofer Amplifier.
- Hi-fi audio amplifier for home stereo system.
- DIY Project for electronics hobbyist.
Advantage of TDA7294
- The TDA7294 IC will deliver up to 100W into a 4Ω speaker. This makes it suitable for connecting larger speakers and subwoofers.
- The IC is designed to provide high quality audio sound with very low distortion and noise levels. This will give a clear and accurate audio reproduction.
- Built-in protection features help the IC to prevent damage.
- Working supply voltage is from ±14V to ±35V. This is suitable for most of the commonly used transformer power supply.
- The TDA7294 can be placed on PCB without any risk. This will make it a favorite among both hobbyists and professionals for DIY audio projects.
- Performance makes it suitable for a wide range of applications like home audio systems to car amplifiers and public address systems.
- The IC provides excellent performance at a competitive price, making it suitable for various audio projects without compromising the quality.
