Overview
The TDA7492PE is a dual BTL (Bridge-Tied Load) class-D audio amplifier designed by STMicroelectronics for home audio applications. It operates on a single power supply and is housed in a 36-pin PowerSSO package with an exposed pad down (EPD) to enhance power dissipation. This amplifier is known for its high efficiency, multiple output configurations, and robust protection features.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 7 - 26 | V |
| Output Power (BTL, VCC = 22 V, THD 1%) | 44 W + 44 W (4 Ω), 32 W + 32 W (6 Ω), 25 W + 25 W (8 Ω) | W |
| Output Power (Parallel BTL, VCC = 22 V, THD 1%) | 70 W (3 Ω) | W |
| Total Harmonic Distortion (THD) | 0.04% | % |
| Total Output Noise (A Curve, GV = 20.8 dB) | 150 | µV |
| Operating Junction Temperature | -40 to +150 | °C |
| Operating Ambient Temperature | -40 to +85 | °C |
| Thermal Resistance (junction-to-case) | 2.98 | °C/W |
| Thermal Resistance (junction-to-ambient) | 24 | °C/W |
| Gain Settings | 20.8 dB, 26.8 dB, 30 dB, 32.8 dB | dB |
Key Features
- Wide-range single-supply operation (7 - 26 V)
- Possible output configurations: 2 x PBTL, 1 x Parallel BTL
- High efficiency
- Four selectable, fixed-gain settings
- Differential inputs to minimize common-mode noise
- Standby, mute, and play operating modes
- Short-circuit protection and detection of shorted output pins during startup
- Thermal overload protection
- Output power limited by PLIMIT function
- ECOPACK® environmentally friendly package
Applications
The TDA7492PE is designed for home audio applications, including stereo and mono configurations. It is suitable for use in various audio systems such as home theaters, soundbars, and other consumer audio equipment where high efficiency and robust protection are required.
Q & A
- What is the operating voltage range of the TDA7492PE?
The TDA7492PE operates on a single power supply with a voltage range of 7 to 26 V. - What are the possible output configurations of the TDA7492PE?
The TDA7492PE can be configured as 2 x PBTL (Pulse Width Modulation Bridge-Tied Load) or 1 x Parallel BTL. - What are the output power capabilities of the TDA7492PE?
The TDA7492PE can deliver up to 44 W + 44 W into 4 Ω loads, 32 W + 32 W into 6 Ω loads, and 25 W + 25 W into 8 Ω loads at THD 1%. - How does the TDA7492PE manage thermal protection?
The device enters mute mode when the internal die temperature exceeds 140 °C and shuts down the power stage when it exceeds 150 °C. It automatically recovers when the temperature drops below the threshold. - What are the gain settings available on the TDA7492PE?
The TDA7492PE offers four selectable, fixed-gain settings: 20.8 dB, 26.8 dB, 30 dB, and 32.8 dB. - How does the TDA7492PE protect against short circuits?
The device features short-circuit protection and can detect shorted output pins during startup, automatically shutting down the power stage if a fault is detected. - What is the purpose of the PLIMIT function in the TDA7492PE?
The PLIMIT function limits the output voltage level below the supply rail by limiting the duty cycle, which is set through the voltage at the PLIMIT pin. - What are the operating modes of the TDA7492PE?
The TDA7492PE has three operating modes: standby, mute, and play, controlled by the STBY and MUTE pins. - How does the TDA7492PE minimize common-mode noise?
The device uses differential inputs to minimize common-mode noise. - What type of package does the TDA7492PE come in?
The TDA7492PE is housed in a 36-pin PowerSSO package with an exposed pad down (EPD) for enhanced heat dissipation.
