Overview
The TDA7292 is a class-AB dual audio power amplifier produced by STMicroelectronics. It is assembled in an 11-pin Multiwatt package and is specifically designed for high-quality sound applications such as hi-fi music centers and stereo TV sets. The amplifier features a wide supply voltage range, high output power, and several protective features like short-circuit protection and thermal overload protection.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VS | Supply voltage range | - | - | ±8 to ±33 | V |
| Io | Output peak current (internally limited) | - | - | 5 | A |
| Ptot | Power dissipation (Tcase = 70°C) | - | - | 40 | W |
| Top | Operating temperature | -20 | - | 85 | °C |
| Tj | Junction temperature | -40 | - | 150 | °C |
| Tstg | Storage temperature | -40 | - | 150 | °C |
| Po | Output power (THD = 10%, RL = 8 Ω, VS = ±26 V) | - | - | 40 | W |
| Po | Output power (THD = 1%, RL = 8 Ω, VS = ±26 V) | - | - | 30 | W |
| THD | Total harmonic distortion (Po = 1 W) | - | - | 0.02 | % |
| CT | Crosstalk (f = 1 kHz) | - | - | 70 | dB |
| SR | Slew rate | - | - | 11 | V/ms |
| GOL | Open-loop gain | - | - | 80 | dB |
| eN | Total input noise (f = 20 Hz to 22 kHz) | - | - | 4 | µV |
| Ri | Input resistance | - | - | 20 | kΩ |
| SVRR | Supply voltage rejection ratio | - | - | 75 | dB |
| VTMUTE | Mute/play threshold | -7 | -6 | -5 | V |
| AMUTE | Mute attenuation | - | - | 75 | dB |
| VTSTBY | Standby/mute threshold | -3.5 | -2.5 | -1.5 | V |
| ASTBY | Standby attenuation | - | - | 110 | dB |
| Iq_STBY | Quiescent current in standby | - | - | 8 | mA |
Key Features
- Wide Supply Voltage Range: The TDA7292 operates with a supply voltage range of up to ±33 V, making it versatile for various applications.
- High Output Power: It delivers 40 W + 40 W into 8 Ω loads with a total harmonic distortion (THD) of 10% and VS = ±26 V.
- No “Pop” at Turn On/Off: The amplifier features a mute function that prevents audible noise during power-on and power-off.
- Standby Feature: The TDA7292 includes a standby mode with low quiescent current (Iq_STBY) to reduce power consumption when not in use.
- Short-Circuit Protection and Thermal Overload Protection: These features ensure the amplifier's reliability and longevity by protecting against short circuits and thermal overload.
- Adjustable Gain: The gain can be adjusted between 25 dB to 33 dB using the datasheet components.
Applications
The TDA7292 is designed for high-quality sound applications, including:
- Hi-Fi Music Centers: Ideal for home audio systems requiring clear and powerful sound.
- Stereo TV Sets: Enhances the audio quality in television systems.
- Professional Audio Equipment: Suitable for use in professional audio setups where high fidelity and reliability are crucial.
Q & A
- What is the maximum output power of the TDA7292?
The TDA7292 can deliver up to 40 W + 40 W into 8 Ω loads with a THD of 10% and VS = ±26 V.
- What is the supply voltage range of the TDA7292?
The TDA7292 operates with a supply voltage range of up to ±33 V.
- Does the TDA7292 have protective features?
Yes, it includes short-circuit protection and thermal overload protection.
- What is the quiescent current in standby mode?
The quiescent current in standby mode is approximately 8 mA.
- Can the gain of the TDA7292 be adjusted?
Yes, the gain can be adjusted between 25 dB to 33 dB using the datasheet components.
- What is the operating temperature range of the TDA7292?
The operating temperature range is from -20°C to 85°C.
- Does the TDA7292 have a mute function?
Yes, it has a mute function that prevents audible noise during power-on and power-off.
- What is the total harmonic distortion (THD) of the TDA7292 at 1 W output power?
The THD at 1 W output power is 0.02%.
- What package type is the TDA7292 assembled in?
The TDA7292 is assembled in an 11-pin Multiwatt package.
- What are the typical applications of the TDA7292?
Typical applications include hi-fi music centers, stereo TV sets, and professional audio equipment.
