A 60 W Class-AB Audio Amplifier: A TDA7296-Based Single-Channel Power Amp
The 60 W Class-AB Audio Amplifier is a single-channel power amplifier board built around the STMicroelectronics TDA7296. This Class-AB amplifier is suited to a wide range of applications, including home stereo systems, self-powered speakers, and high-end televisions.
The TDA7296's high supply-voltage rejection enables a wide voltage range. Its high output current capability lets it deliver maximum power into both 4 and 8 Ω loads
A built-in muting function with a turn-on delay allows smooth remote operation and helps eliminate unwanted switching noise during power on/off. The mute and standby pins each require an external 5 V supply to operate. Screw terminals are provided for the speaker, power input, and audio input signal, and a 3-pin header brings out the standby and mute control voltages. Figure 1 shows the assembled board.
Specs and Features
- Operating voltage range: ±35 V
- Load impedance: 4 ohms or 8 ohms
- Key IC: TDA7296, DMOS power stage, Class-AB
- Output power: up to 60 W music power
- Muting and standby functions, each requiring an external 5 V control signal
- No switch on/off noise
- No Boucherot cell required for most loads
- Very low distortion and noise
- Short-circuit protection and thermal shutdown
- PCB mounting holes: 4 x 4 mm
- PCB dimensions: 51.44 mm x 50.17 mm
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The 60 W Class-AB Audio Amplifier is a single-channel power amplifier board built around the STMicroelectronics TDA7296. This Class-AB amplifier is suited to a wide range of applications, including home stereo systems, self-powered speakers, and high-end televisions.
The TDA7296's high supply-voltage rejection enables a wide voltage range. Its high output current capability lets it deliver maximum power into both 4 and 8 Ω loads
A built-in muting function with a turn-on delay allows smooth remote operation and helps eliminate unwanted switching noise during power on/off. The mute and standby pins each require an external 5 V supply to operate. Screw terminals are provided for the speaker, power input, and audio input signal, and a 3-pin header brings out the standby and mute control voltages. Figure 1 shows the assembled board.
Specs and Features
- Operating voltage range: ±35 V
- Load impedance: 4 ohms or 8 ohms
- Key IC: TDA7296, DMOS power stage, Class-AB
- Output power: up to 60 W music power
- Muting and standby functions, each requiring an external 5 V control signal
- No switch on/off noise
- No Boucherot cell required for most loads
- Very low distortion and noise
- Short-circuit protection and thermal shutdown
- PCB mounting holes: 4 x 4 mm
- PCB dimensions: 51.44 mm x 50.17 mm
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