Overview
The TDA7296S, produced by STMicroelectronics, is a monolithic integrated circuit designed for use as an audio class AB amplifier in Hi-Fi field applications. It is packaged in a Multiwatt15 package, making it suitable for home stereo systems, self-powered loudspeakers, and high-class TV systems. The amplifier is characterized by its wide voltage range and high output current capability, enabling it to deliver high power into both 4 Ω and 8 Ω loads, even with poor supply regulation, and featuring high supply voltage rejection.
The built-in muting function with turn-on delay simplifies remote operation by avoiding switching on/off noises. This feature, along with the standby function, enhances the usability and reliability of the amplifier.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (No Signal) | ±35 | V |
| Output Peak Current | 5 | A |
| Power Dissipation (Tcase = 70°C) | 50 | W |
| Operating Ambient Temperature Range | 0 to 70 | °C |
| Storage Temperature | -40 to 150 | °C |
| Junction Temperature | 150 | °C |
| Thermal Resistance Junction-case | 1 to 1.5 | °C/W |
| Output Power (Music Power) | Up to 60 | W |
| Slew Rate | 7 to 10 | V/µs |
| Open Loop Voltage Gain | 80 | dB |
| Closed Loop Voltage Gain | 24 to 40 | dB |
| Total Input Noise | 2 to 5 | µV |
| Frequency Response (-3 dB) | 20 Hz to 20 kHz | |
| Input Resistance | 100 kΩ | |
| Supply Voltage Rejection | 60 to 75 | dB |
| Thermal Shutdown | 145 | °C |
Key Features
- Multipower BCD technology
- Very high operating voltage range (±35 V)
- DMOS power stage
- High output power (up to 60 W music power)
- Muting and standby functions with turn-on delay to avoid switching noises
- No switch on/off noise
- No Boucherot cells required for stable operation
- Very low distortion and noise
- Short-circuit protection and thermal shutdown
- CMOS logic compatible input pins for mute and standby functions
Applications
The TDA7296S is designed for various Hi-Fi field applications, including:
- Home stereo systems
- Self-powered loudspeakers
- High-class TV systems
- HI-FI/TV subwoofers in bridge configurations
Its high power performance and compatibility with different load values make it versatile for a range of audio applications.
Q & A
- What is the maximum supply voltage for the TDA7296S?
The maximum supply voltage for the TDA7296S is ±35 V.
- What is the maximum output power of the TDA7296S?
The TDA7296S can deliver up to 60 W of music power.
- What are the key protection features of the TDA7296S?
The TDA7296S features short-circuit protection, thermal shutdown, and full protection against electrostatic discharges on every pin.
- How does the muting function work on the TDA7296S?
The muting function is activated via a CMOS logic compatible input pin and includes a turn-on delay to avoid switching noises.
- What is the thermal shutdown temperature for the TDA7296S?
The thermal shutdown temperature for the TDA7296S is 145°C.
- Can the TDA7296S be used in bridge configurations?
Yes, the TDA7296S can be used in bridge configurations, particularly for HI-FI/TV subwoofers, where two amplifiers are used to achieve higher power performance.
- What is the operating ambient temperature range for the TDA7296S?
The operating ambient temperature range for the TDA7296S is 0 to 70°C.
- What is the input resistance of the TDA7296S?
The input resistance of the TDA7296S is 100 kΩ.
- Does the TDA7296S require Boucherot cells for stable operation?
No, the TDA7296S does not require Boucherot cells for stable operation, although they may be needed in certain load impedance conditions.
- How does the standby function work on the TDA7296S?
The standby function is activated via a CMOS logic compatible input pin and includes attenuation of up to 90 dB to minimize power consumption when not in use.
