FDA801-VYY

Overview

The FDA801-VYY is a quad bridge Class-D audio power amplifier manufactured by STMicroelectronics, designed for automotive applications. It integrates a high-performance digital-to-analog converter and powerful MOSFET outputs in a single BCD technology package. The device supports I2S and TDM digital inputs with sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. It delivers a maximum output power of 50W per channel into a 4-ohm load. Operating voltages include 1.8V and 3.3V logic levels, with a minimum supply voltage of 6V to support start-stop engine specifications. The amplifier features 93% efficiency and includes integrated EMI control compliant with IEC61967-4 and IEC62132-4 standards.

Feature Summary

• Integrated 110 dB S/N ratio D/A conversion with idle tone-free DAC
• Full I2C bus diagnostics including DC/AC load detection and clipping detector
• Output low-pass filter included in the feedback loop for lower distortion
• Low radiation function (LRF) and EMI compliance for AM compatibility

Applications

• Automotive audio systems
• Single DIN car-radio boxes
• Start-stop vehicle power architectures

Procurement Notes

Verify the specific suffix VYY against the manufacturer's current datasheet to confirm packaging details and RoHS status. Ensure design-in requirements match the 64-LQFP-EP(10x10) footprint and thermal dissipation needs. Confirm that the 6V minimum operating voltage aligns with the target vehicle's electrical system during cranking or start-stop events. Validate I2C address configurations and digital input interface compatibility before finalizing procurement.

Selection Notes

Select this component when a high-efficiency, digitally controlled quad-channel amplifier is required for automotive environments. It is suitable for designs needing integrated D/A conversion and comprehensive diagnostic capabilities via I2C. Consider this part if the application demands strict EMI management and operation under low-voltage conditions typical of modern vehicles. Ensure the PCB layout accommodates the exposed pad for thermal management.

Part Context

The FDA801 belongs to STMicroelectronics' portfolio of BCD technology audio amplifiers. It is engineered specifically for the automotive sector, addressing challenges such as low-voltage operation and electromagnetic interference. The device combines analog output stages with digital signal processing capabilities, offering a compact solution for multi-channel audio systems in constrained spaces like standard car radio enclosures.

Replacement Considerations

Check for FDA801-VYT if reel packaging is preferred over trays. Verify cross-compatibility with other FDA801 variants only if pinout and electrical characteristics are identical per official documentation.