Overview
The TDA7266 is a dual bridge amplifier designed by STMicroelectronics, specifically tailored for applications in TV and portable radio systems. This amplifier is known for its robust performance and minimal requirement for external components, making it a versatile and efficient choice for various audio applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 3 - 18 | V |
| Output Power (THD = 10%) | 6.3 - 7 | W |
| Total Harmonic Distortion (PO = 1 W) | 0.05 - 0.2 | % |
| Output Peak Current (internally limited) | 2 | A |
| Total Power Dissipation (Tcase = 70 °C) | 33 | W |
| Operating Temperature Range | -10 to +85 | °C |
| Storage Temperature Range | -40 to +150 | °C |
| Thermal Resistance Junction-Case | 1.4 - 2 | °C/W |
| Quiescent Current | 50 - 65 | mA |
| Input Resistance | 25 - 30 | kΩ |
Key Features
- Wide Supply Voltage Range: Operates from 3 to 18 V.
- Minimum External Components: No SWR capacitor, bootstrap, or Boucheron cells are required. Internally fixed gain.
- Standby and Mute Functions: Allows for controlled on/off and mute operations.
- Short-Circuit Protection: Protects against short-circuit conditions.
- Thermal Overload Protection: Prevents damage due to thermal overload.
Applications
The TDA7266 is specifically designed for use in TV and portable radio applications. It is also suitable for other audio systems where a reliable and efficient dual bridge amplifier is required.
- TV Audio Systems
- Portable Radio Systems
- Other Audio Equipment
Q & A
- What is the supply voltage range of the TDA7266?
The TDA7266 operates within a supply voltage range of 3 to 18 V.
- What is the output power of the TDA7266?
The TDA7266 can deliver an output power of 6.3 to 7 W per channel with a THD of 10%.
- Does the TDA7266 require external components like SWR capacitors or bootstrap circuits?
No, the TDA7266 does not require SWR capacitors, bootstrap circuits, or Boucheron cells. It has an internally fixed gain.
- What kind of protection does the TDA7266 offer?
The TDA7266 offers short-circuit protection and thermal overload protection.
- How do the standby and mute functions work on the TDA7266?
The TDA7266 has dedicated pins for standby and mute functions. These functions can be controlled using a microprocessor or simple voltage dividers to avoid turn-on transients and ensure proper operation.
- What is the operating temperature range of the TDA7266?
The TDA7266 operates within a temperature range of -10 to +85 °C.
- What is the thermal resistance junction-case of the TDA7266?
The thermal resistance junction-case of the TDA7266 is between 1.4 and 2 °C/W.
- What is the quiescent current of the TDA7266?
The quiescent current of the TDA7266 is between 50 and 65 mA.
- What is the input resistance of the TDA7266?
The input resistance of the TDA7266 is between 25 and 30 kΩ.
- What are some common applications of the TDA7266?
The TDA7266 is commonly used in TV audio systems, portable radio systems, and other audio equipment.
