TDA7498

Overview

The TDA7498 is a dual BTL Class-D audio amplifier designed for home systems and active speaker applications. It operates on a wide-range single supply voltage from 14V to 39V. The device delivers 100W per channel at THD=10% with a 6Ω load and 36V supply, or 80W per channel with an 8Ω load and 34V supply. It features four selectable fixed gain settings: 25.6dB, 31.6dB, 35.1dB, and 37.6dB. Efficiency reaches 90%. Key protections include short-circuit and thermal overload safeguards, along with standby and mute functions.

Feature Summary

• Dual BTL Class-D architecture supporting high-efficiency audio amplification
• Wide single-supply operation range accommodating various power configurations
• Four selectable fixed gain options for flexible system integration
• Integrated differential inputs to minimize common-mode noise interference

Applications

• Home audio systems
• Active speaker designs
• High-efficiency audio amplification projects

Procurement Notes

Verify the specific suffix of the ordered part number against official STMicroelectronics documentation to confirm exact packaging, temperature grade, and RoHS compliance status. Ensure the selected variant matches the required output power specifications and enclosure type for your design. Cross-reference datasheet revisions to confirm feature availability and electrical characteristics before finalizing procurement decisions.

Selection Notes

Select this component when designing stereo audio outputs requiring high efficiency and robust protection features. Verify that the chosen gain setting aligns with the preceding stage's output level. Confirm that the power supply voltage remains within the 14V to 39V operational range. Ensure adequate thermal management is provided given the high power delivery capabilities and package constraints.

Part Context

This component belongs to the TDA7498 family of dual BTL Class-D audio amplifiers manufactured by STMicroelectronics. The family is engineered for applications demanding high output power and efficiency in a compact form factor. The standard TDA7498 serves as the base model for stereo configurations in consumer electronics and professional audio equipment.

Replacement Considerations

Consult official STMicroelectronics substitution guides for verified alternatives. Direct replacements must maintain compatible pinouts, voltage ranges, and thermal performance characteristics.