Overview
The TDA7293V is a monolithic integrated circuit designed by STMicroelectronics, intended for use as a high-power audio class AB amplifier. This device is particularly suited for Hi-Fi field applications such as home stereo systems, self-powered loudspeakers, and high-end TV audio systems. The TDA7293V features a wide operating voltage range and high output current capability, making it capable of delivering significant power into both 4-Ω and 8-Ω loads.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±12 | ±50 | V | |
| Continuous Output Power (RL = 4 Ω, VS = ±29 V, d = 1%) | 75 | 80 | 80 | W |
| Continuous Output Power (RL = 4 Ω, VS = ±29 V, d = 10%) | 90 | 100 | 100 | W |
| Total Harmonic Distortion (PO = 5 W, f = 1 kHz) | 0.005 | % | ||
| Total Harmonic Distortion (PO = 0.1 to 50 W, f = 20 Hz to 15 kHz) | 0.1 | % | ||
| Quiescent Current | 50 | 100 | mA | |
| Input Bias Current | 1 | µA | ||
| Input Offset Voltage | -10 | 10 | mV | |
| Thermal Shutdown Temperature | 150 | °C | ||
| Package | Multiwatt15V |
Key Features
- Multipower BCD technology
- Very high operating voltage range (±50 V)
- DMOS power stage
- High output power (100 W into 8 Ω @ THD = 10%, with VS = ±40 V)
- Muting and stand-by functions with CMOS logic compatible inputs
- No switch on/off noise
- Very low distortion and noise
- Short-circuit protection and thermal shutdown
- Clip detector and modularity for parallel connection
- Bootstrap voltage supply for high efficiency operation
Applications
The TDA7293V is designed for various Hi-Fi field applications, including:
- Home stereo systems
- Self-powered loudspeakers
- High-end TV audio systems
- Car-radio applications requiring high power and efficiency
The device can be used in both standalone and parallel configurations to drive very low impedance loads, optimizing thermal dissipation and system efficiency.
Q & A
- What is the maximum supply voltage for the TDA7293V?
The maximum supply voltage for the TDA7293V is ±50 V.
- What is the continuous output power of the TDA7293V into a 4-Ω load?
The continuous output power is 75 to 100 W with a distortion of 1% and 10% respectively.
- Does the TDA7293V have built-in protection features?
- How does the muting function work on the TDA7293V?
The muting function is driven by a CMOS logic compatible input and includes a turn-on delay to avoid on-off switching noises.
- Can the TDA7293V be used in parallel configurations?
- What is the thermal shutdown temperature of the TDA7293V?
The device mutes at 150°C and shuts down at 160°C.
- What is the package type of the TDA7293V?
The package type is Multiwatt15V.
- Does the TDA7293V have a standby function?
- How does the bootstrap voltage supply work in the TDA7293V?
The bootstrap voltage supply enhances efficiency by activating power transistors during high output voltage swings.
- What are the typical applications of the TDA7293V?
Typical applications include home stereo systems, self-powered loudspeakers, and high-end TV audio systems.
