HFDA801L-VYY

Overview

The HFDA801L-VYY is a Class-D digital input audio amplifier manufactured by STMicroelectronics, housed in a 64-LQFP-EP (10x10) package. It operates on a supply voltage range of 4.5V to 25V and supports I2S or TDM digital inputs with selectable sample rates up to 192kHz. The device integrates a 2MHz switching PWM output stage and features high-definition audio bandwidth support up to 80kHz. It provides advanced diagnostics including real-time load current monitoring and digital impedance measurement.

Feature Summary

• Integrates a 2MHz switching PWM output stage for compact design
• Supports high-definition audio with wide bandwidth up to 80kHz
• Features full real-time diagnostics for ASIL-compliant systems
• Includes embedded digital impedance meter for speaker monitoring

Applications

• Head units and smart cockpit infotainment systems
• Acoustic Vehicle Alerting Systems (AVAS)
• Telematics audio and eCall applications
• Car sound systems and boosters

Procurement Notes

Verify the exact part number against official documentation as ordering suffixes define specific configurations. Confirm that the component meets AEC-Q100 automotive qualification standards required for your application. Ensure compatibility with the intended digital input interface and power supply voltage range before procurement.

Selection Notes

Select this model for automotive applications requiring high-resolution audio performance and robust system diagnostics. The integrated DAC eliminates external components, reducing cost and size. Consider the 2MHz switching frequency for EMI compliance and smaller passive components compared to lower-frequency alternatives.

Part Context

This component belongs to the HFDA series of automotive Class-D amplifiers designed for car infotainment. The family utilizes BCD technology to combine high-quality audio with automotive robustness. These devices are optimized for compact designs while delivering high efficiency and advanced load monitoring capabilities.

Replacement Considerations

The HFDA801A is a confirmed substitute within the same family offering similar specifications.