FDA801B-VYT

Overview

The FDA801B-VYT is a quad bridge Class-D digital input power amplifier manufactured by STMicroelectronics, designed for automotive applications. It integrates a 110 dB D/A converter and supports I2S and TDM digital inputs with sampling frequencies up to 192 kHz. The device operates on a supply voltage range of 6 V to 15.2 V and delivers a maximum output power of 4 x 50 W into 4 Ω loads at 15.2 V. It features full I2C configurability, comprehensive diagnostics including load detection, and EMI control compliant with IEC standards.

Feature Summary

• Integrates a high-performance 110 dB D/A converter with I2S and TDM digital inputs supporting multiple sampling rates.
• Features full I2C bus driving and diagnostic capabilities, including DC/AC load detection and clipping detection.
• Includes EMI control mechanisms for AM compatibility, evaluated against IEC61967-4 and IEC62132-4 norms.
• Supports low voltage operation down to 6 V, compatible with start-stop engine specifications.

Applications

• Standard single DIN car-radio boxes integrated with tuners
• Automotive audio systems requiring low voltage operation
• Applications demanding strict EMI compliance for AM radio compatibility

Procurement Notes

Verify the specific suffix 'VYT' corresponds to the correct tape and reel packaging configuration as defined in the official datasheet. Confirm that the 15.2 V supply requirement aligns with your system design, as this differs from lower voltage variants. Ensure I2C address settings are configured correctly to avoid bus conflicts in multi-device setups.

Selection Notes

Select the FDA801B-VYT when a quad channel solution with integrated digital-to-analog conversion is required for automotive environments. It is suitable for designs needing support for low voltage start-stop systems and strict electromagnetic interference limits. Compare its 110 dB SNR and 50 W per channel output against other BCD technology amplifiers if higher resolution bandwidth or different switching frequencies are needed.

Part Context

This component belongs to STMicroelectronics' FDAx series of Class-D amplifiers, which utilize 400 kHz PWM switching frequency for high efficiency. Unlike the HFDAx series that uses 2 MHz switching, the FDAx series focuses on standard automotive efficiency and cost-effective integration of digital inputs and diagnostics within a compact package.

FAQ

What is the maximum output power capability of the FDA801B?

The FDA801B provides a maximum output power of 4 x 50 W into 4 Ω loads at a supply voltage of 15.2 V and 1 kHz frequency.

Does the FDA801B support digital audio inputs?

Yes, it integrates a 110 dB D/A converter and supports I2S and TDM digital inputs with selectable sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz.