FDA803Q-V0T

Overview

The FDA803Q-V0T is a single-channel Class-D digital input automotive power amplifier manufactured by STMicroelectronics. It integrates a high-performance D/A converter with powerful MOSFET outputs, achieving an efficiency of 90%. The device supports I2S and TDM digital inputs with sampling frequencies up to 192 kHz. It operates within a wide supply voltage range of 3.3 V to 18 V and features AEC-Q100 qualification. Key specifications include a maximum output power of 45 W into a 4-ohm load, a THD+N of 0.01%, and a quiescent current of 1 uA. It utilizes a PowerSSO-36 package and functions between -40°C and +125°C.

Feature Summary

• Integrates a 108 dB D/A converter with I2S and TDM digital input interfaces for direct audio processing.
• Includes comprehensive diagnostic capabilities such as open load and DC offset detection during play mode.
• Features a feedback loop incorporating the output L-C low-pass filter for superior frequency response linearity.
• Supports configurable amplitude limiting and legacy mode operation without I2C interface.

Applications

• Car radio systems
• Telematics units
• Emergency call (e-call) modules

Procurement Notes

Verify the specific suffix 'V0T' against official STMicroelectronics documentation to confirm exact packaging, tape-and-reel quantities, and moisture sensitivity levels. Ensure compatibility with the required I2S/TDM data formats and I2C control bus voltages (3.3 V/1.8 V). Confirm that the PowerSSO-36 slug-down package thermal requirements are met in the target design.

Selection Notes

Select this component for applications requiring a compact, single-channel solution with integrated digital-to-analog conversion. It is suitable for designs needing wide voltage tolerance from 3.3 V to 18 V, including load dump protection. Consider its AEC-Q100 qualification and CISPR 25 Class V EMI performance for strict automotive compliance.

Part Context

The FDA803Q belongs to STMicroelectronics' family of automotive Class-D power amplifiers designed for advanced infotainment and telematics. It leverages BCD technology to combine digital inputs with analog power stages. This series addresses the need for high efficiency and low distortion in space-constrained automotive environments like standard single DIN car radio boxes.

Replacement Considerations

The FDA803D is a related variant within the same family. Verify pinout and feature parity before substitution. No other direct public substitute part numbers are confirmed for this specific model.