TDA7267

Overview

The TDA7267 is a Class-AB mono audio power amplifier designed for television applications. It operates within a supply voltage range of 4.5V to 18V and delivers up to 2W output power into an 8Ω load at 10% THD with a 12V supply. The device features a fixed internal voltage gain of 32dB and utilizes a fully complementary output configuration for rail-to-rail swing without bootstrap capacitors. It includes thermal protection, AC short-circuit protection, and a standby mode. The component is housed in an 8-pin MiniDIP package.

Feature Summary

• Fully complementary output configuration enables rail-to-rail voltage swing without requiring bootstrap capacitors.
• Integrated thermal shutdown and AC short-circuit protection mechanisms safeguard the device during fault conditions.
• Low turn-on/off pop noise design minimizes audible artifacts during power transitions.
• Standby mode functionality allows for significant current reduction when the amplifier is not in use.

Applications

• Television audio systems
• Mono audio amplification circuits

Procurement Notes

Verify component status as obsolete before procurement planning. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing PCB footprints for the 8-MiniDIP package. Review datasheet specifications for absolute maximum ratings to prevent operational damage. Validate that application requirements align with the discontinued product lifecycle.

Selection Notes

Select this component for single-channel audio applications requiring simple implementation without external feedback capacitors or Boucherot cells. Consider its suitability for low-voltage operation down to 4.5V. Evaluate thermal management needs based on the specified junction-to-ambient resistance. Ensure the application does not require stereo output or higher power levels than 2W.

Part Context

The TDA7267 belongs to STMicroelectronics' legacy line of Class-AB audio power amplifiers. It was specifically engineered for cost-sensitive and space-constrained TV applications. The device simplifies circuit design by eliminating the need for external coupling components typically required in similar amplifier topologies.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. As the product is marked obsolete, alternative solutions must be evaluated based on functional equivalence, pin compatibility, and performance parameters rather than direct cross-referencing.