HFDA802-VYY

Overview

The HFDA802-VYY is a Class-D digital input automotive audio amplifier manufactured by STMicroelectronics. It features two stereo output channels housed in a 64-LQFP-EP (10x10) package with an exposed pad. The device operates on a supply voltage range of 4.5V to 25V, with a minimum of 5V at turn-on. It delivers a maximum output power of 80W per channel into a 4-ohm load. The component is AEC-Q100 qualified and supports an operating temperature range from -40°C to 105°C.

Feature Summary

• Integrates a 24-bit DAC with 120 dB conversion capability for high-fidelity audio processing.
• Supports wide bandwidth applications up to 80 kHz with extremely low noise and THD levels.
• Features comprehensive diagnostic matrix including full play-to-diagnostic capabilities for system robustness.

Applications

• Automotive audio systems requiring high reliability and advanced diagnostics
• Compact car radio designs utilizing digital input interfaces
• Start-stop vehicle applications supporting low voltage operation down to 4.5 V

Procurement Notes

Verify the specific suffix 'VYY' against official STMicroelectronics documentation to confirm exact packaging and tape-and-reel specifications. Ensure compatibility with the 64-LQFP-EP footprint during PCB layout. Confirm that the 4.5V minimum operating voltage aligns with the target vehicle's electrical architecture, particularly during cranking conditions.

Selection Notes

Select this component when high-resolution audio bandwidth and integrated digital-to-analog conversion are required within a compact automotive form factor. The 2 MHz switching frequency allows for smaller output LC filters compared to lower-frequency alternatives. Verify that the design can accommodate the 64-pin LQFP package dimensions and thermal requirements associated with 80W per channel output.

Part Context

The HFDA802 belongs to STMicroelectronics' high-performance Class-D automotive amplifier family. It utilizes advanced BCD technology to integrate powerful MOSFET outputs with digital signal processing. This series is designed to meet stringent OEM requirements for speaker control, system reliability, and EMI compliance in modern vehicle infotainment systems.

Replacement Considerations

HFDA802-VYT: Same functional core but potentially different packaging or reel configuration; verify pinout and thermal characteristics match the existing design constraints before substitution.