FDA802AB-VYT

Overview

The FDA802AB-VYT is a dual bridge Class-D automotive power amplifier in an LQFP64 package. It features integrated 110 dB D/A conversion and digital inputs (I2S/TDM) supporting 44.1 kHz to 192 kHz sampling rates. The device operates on a wide supply range of 5.5 V to 50 V, delivering up to 2x150 W at 35 V or 2x180 W at 50 V into 8 Ω loads. It includes comprehensive I2C diagnostics, EMI control compliant with CISPR25 Class V, and AEC-Q100 qualification.

Feature Summary

• Integrated high-performance 110 dB D/A converter with digital signal processing for interpolation and noise shaping.
• Advanced diagnostic capabilities including short-to-VCC/GND detection, DC/AC load monitoring, and digital impedance-metering via I2C.
• Robust EMI management with Low Radiation Function (LRF) and compliance with CISPR25 Class V standards.
• Flexible output configuration supporting independent channel operation, 2 Ω loads, and legacy mode without I2C.

Applications

• Car radio applications requiring high efficiency and low voltage compatibility.
• Automotive audio systems utilizing standard car battery supplies (6-18 V).
• High-power audio setups employing boosted power supplies up to 50 V.
• Single DIN car-radio boxes requiring FM/AM compatibility and EMI mitigation.

Procurement Notes

Verify the specific ordering suffix 'VYT' corresponds to tape and reel packing rather than tray packaging. Confirm that the component meets AEC-Q100 qualification requirements for your target automotive application. Ensure design compatibility with the LQFP64 exposed pad up package dimensions and thermal dissipation needs.

Selection Notes

Select this component for designs requiring fully digital input interfaces and integrated DAC functionality to minimize external components. Consider its wide operating supply range for compatibility with both standard and boosted automotive power architectures. Evaluate the extensive diagnostic features if system reliability and fault detection are critical priorities.

Part Context

This part belongs to STMicroelectronics' FDA802 family of Class-D amplifiers. It utilizes advanced BCD technology to integrate powerful MOSFET outputs with digital control logic. The family is designed specifically for automotive environments, offering superior efficiency compared to Class-AB amplifiers while maintaining high audio fidelity through closed-loop feedback strategies.

Replacement Considerations

FDA802AB-VYY serves as the tray-packaged alternative to the FDA802AB-VYT reel version. Both variants share identical electrical characteristics and pinouts within the FDA802AB series.