FDA802A-VYY

Overview

The FDA802A-VYY is a dual bridge Class D automotive power amplifier in a 64-LQFP-EP package. It operates on a supply voltage range of 5.5 V to 50 V. The device delivers up to 150 W per channel at 35 V into 4 Ω (THD=10%) and up to 180 W per channel at 50 V into 8 Ω (THD=10%). Maximum output power reaches 270 W at 50 V into 8 Ω. At standard battery voltage (14 V), it provides 22 W into 4 Ω or 37 W into 2 Ω. It features integrated 110 dB D/A conversion, I2S/TDM digital inputs, and AEC-Q100 qualification.

Feature Summary

• Integrates high-performance 110 dB D/A conversion with powerful MOSFET outputs for superior efficiency compared to Class AB amplifiers.
• Includes comprehensive I2C bus diagnostics for short circuits, DC/AC load faults, clipping detection, and offset monitoring.
• Features advanced EMI control compliant with CISPR25 Class V standards, including Low Radiation Function (LRF) for FM/AM compatibility.

Applications

• Car radio applications requiring high-power audio amplification
• Automotive systems supporting low-voltage start-stop specifications
• Single DIN car-radio boxes integrated with tuners

Procurement Notes

Verify the specific ordering suffix matches the required packing method. The -VYY suffix indicates tray packaging, while -VYT denotes tape and reel. Confirm that the component meets the target environmental compliance grade and ensure the design accounts for the exposed pad thermal requirements specified in the datasheet.

Selection Notes

Select this model for designs requiring fully digital input processing and integrated DAC functionality. It supports independent channel operation and drives loads down to 2 Ω. Ensure the application utilizes an I2C interface for configuration and diagnostics, as legacy mode is available but limits advanced feature access.

Part Context

This component belongs to the FDA802 family of dual bridge Class D amplifiers designed using advanced BCD technology. It is specifically engineered for automotive environments, offering high immunity to GSM/RF interference and robust fault protection mechanisms suitable for vehicle electrical systems.

Replacement Considerations

FDA802A-VYT serves as the functional equivalent with identical electrical characteristics but utilizes tape and reel packaging instead of trays.

FAQ

Does the FDA802A include an internal analog-to-digital converter?

No, the FDA802A integrates a high-performance Digital-to-Analog (D/A) converter with 110 dB dynamic range, not an ADC.

What is the minimum operating supply voltage for this amplifier?

The FDA802A can operate with a power supply as low as 5.5 V, supporting modern low-voltage automotive specifications.