FDA903Q-V0T

Overview

The FDA903Q-V0T is a single-channel Class D digital input automotive power amplifier designed for car audio and telematics applications. It integrates a high-performance D/A converter with powerful MOSFET outputs, supporting I2S and TDM digital inputs with sampling frequencies up to 192 kHz. The device operates on a wide supply voltage range from 3.3 V to 18 V and delivers 25 W into a 4 Ω load at 14.4 V with 1% THD. It features comprehensive diagnostics via the I2C bus, including short-to-ground/VCC detection, open/short load monitoring, thermal warnings, and DC offset detection.

Feature Summary

• Integrates a high-performance D/A converter with I2S and TDM digital input support
• Provides full I2C bus diagnostics including load and thermal protection
• Features a wide operating supply voltage range suitable for automotive environments
• Includes an output lowpass filter within the feedback loop for superior audio performance

Applications

• Car radio systems
• Telematics units
• E-call modules
• Noise and tone generators

Procurement Notes

Verify the specific suffix 'V0T' against official STMicroelectronics documentation to confirm tape and reel packaging details. Ensure compatibility with AEC-Q100 Grade 1 requirements for your target automotive application. Cross-reference the VFQFPN 48 package dimensions with mechanical drawings before PCB layout finalization.

Selection Notes

Select this component when a single-channel solution with integrated digital-to-analog conversion is required. It is suitable for designs needing extensive diagnostic capabilities via I2C and operation across a broad voltage spectrum. Consider alternative models if multiple channels or analog inputs are necessary instead of digital interfaces.

Part Context

This part belongs to the FDAx03Q family of automotive Class D amplifiers from STMicroelectronics. These devices utilize advanced BCD technology to combine digital processing with power output stages in a compact package. The family is engineered specifically for the harsh electrical and thermal conditions found in modern vehicle audio and communication systems.

Replacement Considerations

The FDA803Q is a related single-channel variant within the same family. Verify pinout and feature parity before substitution. No other direct public substitutes are confirmed.