FDA802A-VYT

Overview

The FDA802A-VYT is a dual-bridge Class-D digital input automotive power amplifier manufactured by STMicroelectronics. It integrates a high-performance D/A converter and powerful MOSFET outputs to achieve superior efficiency compared to standard Class-AB designs. The device supports a wide operating supply range from 5.5 V to 50 V, enabling operation under standard car batteries or boosted power supplies. Key specifications include an integrated 110 dB D/A conversion, I2S and TDM digital inputs with sampling frequencies up to 192 kHz, and full I2C bus driving with eight addresses. It features output low-pass filters within the feedback loop for excellent audio performance and comprehensive diagnostics.

Feature Summary

• Integrated 110 dB D/A conversion with I2S and TDM digital inputs supporting multiple sampling frequencies
• Comprehensive I2C bus diagnostics including short-to-VCC/GND detection, DC/AC load monitoring, and clipping detection
• Advanced EMI control mechanisms ensuring FM/AM compatibility and compliance with CISPR25 Class V standards
• Output low-pass filter included in the feedback loop to ensure frequency response linearity independent of external component quality

Applications

• Automotive radio applications requiring high-efficiency amplification
• Standard single DIN car-radio boxes integrated with tuners
• Low voltage 'start-stop' vehicle systems operating at 5.5 V
• Boosted power supply environments up to 50 V

Procurement Notes

Verify the specific ordering suffix to confirm packaging type. The FDA802A-VYT designation indicates tape and reel packing, whereas the FDA802A-VYY variant utilizes tray packing. Ensure the selected package aligns with automated assembly requirements. Confirm current product status as automotive-grade components may undergo lifecycle changes. Cross-reference the latest datasheet revision for any updates to electrical characteristics or pin configurations before finalizing procurement orders.

Selection Notes

Select this component for designs requiring fully digital audio processing with minimal external filtering. The integrated D/A converter and digital signal processing reduce bill-of-materials complexity. Consider the LQFP64 exposed pad package for thermal management in high-power scenarios. Verify that the host system supports I2S/TDM interfaces and I2C configuration. Evaluate the need for step-up voltage capabilities if operating above standard battery voltages to maximize output power delivery.

Part Context

The FDA802A belongs to STMicroelectronics' FDA802 family of automotive power amplifiers. This series is designed using advanced BCD technology to deliver high output power with low distortion. The FDA802A specifically targets applications demanding high efficiency and robust diagnostic features. It complements other automotive audio solutions by providing a fully digital approach that minimizes sensitivity to demodulation filter effects and GSM/RF interference.

Replacement Considerations

The FDA802A-VYT is functionally compatible with the FDA802S-VYT regarding core amplifier architecture and digital interface support. Both devices share similar automotive qualification standards and package types. However, verify specific diagnostic feature sets and exact power output ratings against application requirements when substituting between variants within the FDA802 family.