FDA802SB-VYT

Overview

The FDA802SB-VYT is a dual bridge Class-D automotive power amplifier designed for car radio applications. It integrates a high-performance D/A converter with powerful MOSFET outputs, achieving an S/N ratio of 110 dB and dynamic range of 108 dB. The device supports I2S and TDM digital inputs at sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. Operating supply ranges from 5.5 V to 25 V. Output power capabilities include 2 x 22 W into 4 Ω and 2 x 37 W into 2 Ω at 14 V (1% THD). It features full I2C configurability with eight addresses, EMI compliance per CISPR25 Class V and ISO 11452-2, and AEC-Q100 qualification.

Feature Summary

• Integrates a high-performance D/A converter with Class-D MOSFET outputs for superior efficiency and audio fidelity.
• Includes output L-C low-pass filter within the feedback loop to ensure frequency response linearity and reduced distortion.
• Supports parallel mode operation for driving 1 Ω loads up to 18 V and standard 2 Ω loads up to 18 V.
• Features comprehensive I2C bus diagnostics including short-to-VCC/GND detection, DC/AC load diagnostics, and digital impedance metering.

Applications

• Car radio systems
• Automotive telematics units
• Noise and tone generators

Procurement Notes

Verify that the specific ordering suffix matches the required packing format. The FDA802SB-VYT designation indicates Tape & Reel packaging, whereas the FDA802SB-VYY variant utilizes Tray packaging. Confirm the package orientation corresponds to the exposed pad up configuration specified in the mechanical data. Ensure component authenticity through authorized STMicroelectronics distribution channels.

Selection Notes

Select this component for designs requiring integrated digital-to-analog conversion alongside power amplification. The wide operating voltage range accommodates both standard vehicle batteries and boosted power supplies. Consider the thermal resistance characteristics when designing heat dissipation strategies for the LQFP64 package. Verify that the application environment meets the specified temperature and EMI standards.

Part Context

This device belongs to the FDA802 family of automotive power amplifiers manufactured by STMicroelectronics. It utilizes advanced BCD technology to combine digital control interfaces with high-voltage analog output stages. The FDA802SB specifically targets applications demanding high output power and strict electromagnetic interference management within compact single DIN form factors.

Replacement Considerations

FDA802SB-VYY serves as a functional equivalent with identical electrical specifications but differs in packaging format, utilizing trays instead of tape and reel.

FAQ

What is the maximum transient supply voltage the device can withstand?

The FDA802SB can withstand a transient supply voltage of up to 60 V for durations not exceeding 50 ms when not operating.

How does the device handle EMI issues in car radio environments?

The FDA802SB includes Low Radiation Function (LRF) and has been evaluated for EMI compliance following CISPR25 Class V and ISO 11452-2 norms.

Can the FDA802SB operate without an I2C interface?

Yes, the device supports a legacy mode that allows operation without I2C communication, though full configurability requires the I2C bus.