FDA803D-EHX

Overview

The FDA803D-EHX is a single-channel Class-D digital input automotive power amplifier manufactured by STMicroelectronics. It delivers 45 W of output power into a 4 Ohm load with a total harmonic distortion plus noise of 0.01%. The device operates on a supply voltage ranging from 3.3 V to 18 V and features a low operating supply current of 1 uA. It is housed in a PowerSSO-36 package designed for surface mount installation. The component supports an extended operating temperature range from -40°C to +125°C and holds AEC-Q100 qualification for automotive reliability.

Feature Summary

• Digital input interface supporting I2S protocols
• Integrated diagnostic capabilities for system monitoring
• Built-in protection mechanisms including short-circuit and thermal shutdown

Applications

• Automotive audio systems requiring high efficiency
• Single-channel speaker amplification in vehicles
• Digital audio processing units with diagnostic needs

Procurement Notes

Verify the specific suffix EHX against the official datasheet to confirm packaging and material specifications. Ensure compatibility with the target PCB footprint for the PowerSSO-36 package. Confirm that the design accounts for the specified thermal management requirements given the 125°C maximum operating temperature rating. Cross-reference the AEC-Q100 qualification status with project quality standards.

Selection Notes

Select this component when a single-channel, digitally controlled amplifier with integrated diagnostics is required for automotive environments. The wide supply voltage range accommodates various vehicle electrical architectures. The low standby current aids in battery conservation. Verify that the digital input interface matches the source processor's protocol before finalizing the selection.

Part Context

This part belongs to the FDA803D series of automotive power amplifiers from STMicroelectronics. The series is designed for robust performance in harsh automotive environments. The FDA803D-EHX variant specifically denotes the tube packaging configuration as indicated by distributor listings. It shares core electrical characteristics with other variants in the family, differing primarily in packaging and handling specifications.

Replacement Considerations

The FDA803D-EHT is a documented alternative within the same product family, offering identical electrical performance but in tape-and-reel packaging. Both parts share the same PowerSSO-36 footprint and functional specifications. Designers should verify that the change in packaging does not impact assembly processes or inventory management strategies.