HFDA80D-F2Y

Overview

The HFDA80D-F2Y is a four-channel Class-D automotive audio amplifier manufactured by STMicroelectronics. It operates within a supply voltage range of 4.5 V to 18 V and supports loads of 4 Ω or 2 Ω. The device features a Total Harmonic Distortion plus Noise (THD+N) of 0.015% at 1 W into 4 Ω. It utilizes a 2 MHz switching PWM architecture for EMI compliance and integrates I²S and TDM digital inputs with selectable sample rates up to 192 kHz. The component is housed in an LQFP-48 package, rated for operation between -40°C and +125°C, and holds AEC-Q100 qualification.

Feature Summary

• Integrates advanced GSM noise immunity solutions combined with 2 MHz switching PWM output stages for compact design.
• Features a broad diagnostics matrix to support OEM requirements for speaker control and system robustness.
• Supports wide band applications up to 40 kHz with extremely low noise levels and high fidelity audio performance.
• Includes integrated 112 dB D/A conversion and compatibility with battery load dump conditions up to 40 V.

Applications

• Automotive Hi-Fi audio systems requiring high channel count and reliability
• In-car entertainment systems utilizing digital audio interfaces like I²S and TDM
• Applications demanding high power output with reduced output LC size due to high-frequency switching

Procurement Notes

Verify the specific suffix F2Y against the manufacturer's official datasheet to confirm packaging details and tape-and-reel specifications. Ensure the procurement order matches the exact part number to avoid discrepancies in moisture sensitivity handling or tray quantities. Cross-reference the AEC-Q100 qualification status with current production data sheets before finalizing orders.

Selection Notes

Select this component for automotive designs requiring four independent channels with digital input capabilities. The 2 MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Ensure the application environment stays within the specified -40°C to +125°C operating temperature range and that the power supply remains stable between 4.5 V and 18 V during cranking and normal operation.

Part Context

The HFDA80D belongs to the HFDA series of automotive audio amplifiers from STMicroelectronics. This series is designed using BCD technology to integrate high-voltage power outputs with digital control logic. The family focuses on providing high efficiency and audio quality while meeting strict automotive electromagnetic interference standards and diagnostic requirements for modern vehicle architectures.

Replacement Considerations

Consult the official STMicroelectronics replacement guide for direct pin-compatible substitutes within the HFDA series. Verify that any alternative component maintains the same LQFP-48 package dimensions and thermal characteristics. Confirm that the substitute also meets AEC-Q100 automotive qualification standards if required for the specific application.

FAQ

What digital audio interfaces does the HFDA80D-F2Y support?

The device supports I²S and TDM digital inputs, with TDM supporting up to 16 channels.

Is the HFDA80D-F2Y qualified for automotive use?

Yes, the component is AEC-Q100 qualified and designed for automotive applications.

What is the typical THD+N performance of this amplifier?

The typical THD+N is 0.015% at 1 W output into a 4 Ω load at 1 kHz.