Overview
The TDA7266P, produced by STMicroelectronics, is a dual bridge amplifier designed specifically for applications in TV and portable radio systems. This amplifier is known for its wide supply voltage range, minimal external component requirements, and integrated standby and mute functions. It offers high performance with features such as short-circuit protection and thermal overload protection, making it a reliable choice for various audio applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VCC Supply Range | 3 | 11 | 18 | V |
| Iq Total Quiescent Current | 50 | 65 | - | mA |
| VOS Output Offset Voltage | - | - | 120 | mV |
| PO Output Power (THD = 10%) | 6.3 | - | 7 | W |
| THD Total Harmonic Distortion (PO = 1W) | 0.05 | 0.2 | - | % |
| SVR Supply Voltage Rejection (f = 100Hz, VR = 0.5V) | 40 | 56 | - | dB |
| CT Crosstalk | 46 | 60 | - | dB |
| AMUTE Mute Attenuation | 60 | 80 | - | dB |
| TW Thermal Threshold | - | - | 150 | °C |
| GV Closed Loop Voltage Gain | 25 | 26 | 27 | dB |
| ∆GV Voltage Gain Matching | - | - | 0.5 | dB |
| Ri Input Resistance | 25 | 30 | - | kΩ |
| VTST-BY ST-BY Threshold | 0.8 | 1.3 | 1.8 | V |
| IST-BY ST-BY Current (V6 = GND) | - | - | 100 | µA |
Key Features
- Wide Supply Voltage Range: The TDA7266P operates within a supply voltage range of 3 to 18 volts, making it versatile for various applications.
- Minimum External Components: It does not require SWR capacitors, bootstrap, or Boucherot cells, and has an internally fixed gain, simplifying the circuit design.
- Standby and Mute Functions: Integrated standby and mute functions allow for controlled turn-on and turn-off sequences, reducing noise and ensuring smooth operation.
- Short-Circuit Protection: The amplifier is protected against short circuits, enhancing its reliability and lifespan.
- Thermal Overload Protection: It includes thermal overload protection to prevent damage from excessive heat.
- High Performance: Offers high output power of up to 7 watts per channel with low total harmonic distortion.
Applications
The TDA7266P is specifically designed for use in TV and portable radio applications. Its features make it suitable for any system requiring a reliable, high-performance audio amplifier with minimal external components.
- TV Audio Systems
- Portable Radio Systems
- Other Audio Equipment Requiring Dual Bridge Amplification
Q & A
- What is the supply voltage range of the TDA7266P?
The TDA7266P operates within a supply voltage range of 3 to 18 volts.
- What is the maximum output power of the TDA7266P?
The maximum output power is up to 7 watts per channel with a total harmonic distortion of 10%.
- Does the TDA7266P require external bootstrap or Boucherot cells?
No, the TDA7266P does not require SWR capacitors, bootstrap, or Boucherot cells.
- What kind of protection does the TDA7266P have against overheating?
The TDA7266P includes thermal overload protection to prevent damage from excessive heat.
- How does the standby and mute function work in the TDA7266P?
The standby and mute functions can be controlled using a microprocessor or a simple RC network to avoid noise during turn-on and turn-off transients.
- What is the typical quiescent current of the TDA7266P?
The typical quiescent current is 65 mA.
- What is the maximum junction temperature of the TDA7266P?
The maximum junction temperature is 150°C.
- What is the input resistance of the TDA7266P?
The input resistance is typically 30 kΩ.
- How much noise does the TDA7266P produce?
The total output noise voltage is 150 µV (A-weighted, 20 Hz to 20 kHz).
- What are the common applications of the TDA7266P?
The TDA7266P is commonly used in TV and portable radio applications.
