FDA801-VYT

Overview

The FDA801-VYT is a quad bridge Class-D digital input power amplifier manufactured by STMicroelectronics, designed for automotive applications. It integrates a high-performance D/A converter with powerful MOSFET outputs in a 64-LQFP-EP package (10x10 mm). The device supports I2S and TDM digital inputs at sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. It operates with supply voltages as low as 6 V, supporting start-stop engine specifications. Key electrical features include an integrated D/A conversion with 110 dB S/N ratio, 93% efficiency Class-D channels, and full I2C bus diagnostics including DC/AC load detection.

Feature Summary

• Integrates a high-performance D/A converter with 110 dB signal-to-noise ratio and 108 dB dynamic range for superior audio fidelity.
• Supports flexible digital audio interfaces including I2S and TDM with multiple standard sampling rates.
• Features comprehensive I2C-based diagnostics for automotive reliability, including channel-independent tristate, soft play/mute, and fault protection.
• Includes the output L-C low-pass filter within the feedback loop to ensure frequency response linearity and lower distortion.

Applications

• Automotive audio systems requiring compatibility with standard single DIN car-radio boxes
• Applications involving low voltage operation for start-stop engine specifications
• Digital audio amplification where EMI control for AM radio compatibility is required

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or official sales offices. Confirm the specific suffix VYT corresponds to the 64-LQFP-EP reel packaging configuration. Ensure design compliance with AEC-Q100 qualification standards if applicable to the target automotive environment. Cross-reference the latest datasheet revision for any updates on recommended operating conditions or thermal characteristics before finalizing procurement orders.

Selection Notes

Select this component when a quad-channel solution with integrated digital-to-analog conversion is required. It is suitable for designs needing low-voltage operation down to 6 V. Consider its I2C diagnostic capabilities for advanced system monitoring needs. Evaluate its EMI management features against specific regulatory requirements such as IEC61967-4. Ensure the host processor supports the required I2S or TDM interface protocols for digital audio input.

Part Context

The FDA801 belongs to STMicroelectronics' family of automotive power amplifiers utilizing BCD technology. This technology allows the integration of high-performance DACs alongside Class-D MOSFET outputs. The FDA801-VYT variant specifically denotes the tape and reel packaging format within the 64-pin LQFP-EP footprint. It serves as a digital-input alternative to analog amplifiers, offering higher efficiency and configurable parameters via the I2C bus.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional compatibility with existing designs if considering alternative quad-channel Class-D amplifiers from other manufacturers.