TDA7294HS

Overview

The TDA7294HS is a monolithic integrated circuit in the Multiwatt15H package, designed as an audio Class AB amplifier for Hi-Fi applications. It utilizes DMOS power stage technology and supports a very high operating voltage range of up to ±40V. The device delivers high output power, reaching up to 100W music power, into both 4Ω and 8Ω loads. Key electrical features include built-in muting and stand-by functions, thermal shutdown protection, short-circuit protection, and very low distortion and noise characteristics.

Feature Summary

• DMOS power stage technology for high performance
• Built-in muting and stand-by functions with turn-on delay
• Integrated thermal shutdown and short-circuit protection
• Very low distortion and noise levels

Applications

• Home stereo systems
• Self-powered loudspeakers
• Top-class television sets

Procurement Notes

Verify the specific suffix 'HS' against the manufacturer's current documentation to confirm the Multiwatt15H package variant. Ensure compatibility with existing PCB footprints designed for this specific pinout and thermal tab configuration. Cross-reference the part number with official STMicroelectronics databases to confirm current production status and availability of equivalent alternatives if the component is discontinued.

Selection Notes

Select this component for designs requiring high voltage operation and robust protection features in audio amplification circuits. The Multiwatt15H package offers distinct thermal and mechanical properties compared to standard variants. Consider the need for Boucherot cells only under specific load impedance conditions at lower supply voltages. Evaluate the suitability of the DMOS technology for the intended power delivery requirements.

Part Context

The TDA7294 series represents a line of high-power audio amplifiers from STMicroelectronics. The TDA7294HS specifically denotes the version housed in the Multiwatt15H package. This family is engineered for demanding audio applications where high supply voltage rejection and high output current capability are essential. The HS variant shares core functional specifications with other TDA7294 models but differs in physical packaging.

Replacement Considerations

Public confirmed substitute part numbers: TDA7293V.