FDA803D-EHT

Overview

The FDA803D-EHT is a single-channel Class-D digital input automotive power amplifier manufactured by STMicroelectronics. It delivers 45 W of output power into a 2-ohm load and features integrated 108 dB D/A conversion. The device supports I2S and TDM digital inputs with sampling frequencies up to 192 kHz. It operates within a wide supply voltage range of 3.3 V to 18 V and includes comprehensive diagnostics such as open load and DC offset detection. The component is housed in a PowerSSO-36 EPU package and meets AEC-Q100 qualification standards for automotive applications.

Feature Summary

• Integrates high-performance D/A conversion with powerful MOSFET outputs for compact, efficient audio amplification.
• Supports direct digital audio interfaces including I2S and TDM modes with configurable channel counts.
• Features advanced diagnostic capabilities including open load and DC offset detection during operation.
• Includes the output L-C low-pass filter within the feedback loop to ensure superior frequency response linearity.

Applications

• Car radio systems
• Automotive telematics units
• e-Call emergency systems
• Noise and tone generators

Procurement Notes

Verify the specific suffix 'EHT' indicates tape-and-reel packaging when sourcing components. Confirm that the order matches the required AEC-Q100 automotive grade specifications. Ensure compatibility with the PowerSSO-36 EPU footprint during PCB design. Check for any recent Product Change Notifications regarding assembly or material updates before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a single-channel digital input amplifier with integrated DAC functionality. It is suitable for applications needing wide voltage operation from 3.3 V to 18 V. Consider its CISPR 25 Class V compliance for EMI-sensitive environments. Evaluate the need for I2C configurability versus legacy mode operation based on system control requirements.

Part Context

This part belongs to the FDA803D series of automotive power amplifiers. It utilizes advanced BCD technology to integrate digital inputs and analog outputs. The series is designed for robust performance in harsh automotive environments. Other variants in the family may offer different channel counts or packaging options while maintaining similar core diagnostic and efficiency features.

Replacement Considerations

The FDA803D-EHX is an alternative variant within the same product family. Verify if the packaging difference between EHT (tape and reel) and EHX (tube) aligns with manufacturing needs. Ensure functional equivalence regarding pinout and electrical parameters before substitution.