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STMicroelectronics FDA803U & FDA903U Single Bridge Class-D Amplifiers

STMicroelectronics FDA803U and FDA903U Single Bridge Class-D Amplifiers are digital input amplifiers with Bipolar-CMOS-DMOS (BCD) technology for automotive audio applications. The amplifiers integrate a high-performance digital-to-analog converter together with MOSFET outputs. The devices can be operated with standard car battery levels (5.5-18V operating, compatible with load dump pulse) and with external step-down generated voltages or emergency batteries. FDA803U and FDA903U are configurable through the I2C bus interface and integrate a complete diagnostics array specially intended for automotive applications, including innovative open load and DC offset detection in play mode. The devices are intended to be used in the standard single DIN car radio box and the tuner.

Features

  • AEC-Q100 qualified
  • Integrated 108dB D/A conversion
  • I2S and TDM digital input (4/8/16CH TDM)
  • 44.1kHz, 48kHz, 96kHz, and 192kHz input sampling frequency
  • Full I2C bus driving (3.3V/1.8V)
  • CISPR 25-Class V (fourth edition)
  • Low quiescent current
  • Output low-pass filter included in the feedback
  • MOSFET power outputs allow high output power capability
    • 1 x 25W/4Ω @ 14.4V, 1kHz total harmonic distortion = 1%
    • 1 x 30W/4Ω @ 14.4V, 1kHz THD = 10%
  • 3.3V to 18V operating supply range, suitable for car radio, telematics, and e-call
  • 2Ω loads driving
  • Power limiting function (configurable through I2C)
  • I2C bus diagnostics
    • Short to VCC/GND
    • Short load and open load detection (also in play mode)
    • Four thermal warnings
  • DC offset detector and hot-spot detection
  • Clipping detector
  • Integrated thermal protection
  • Short circuit and ESD-integrated protections
  • PowerSSO-36 exposed pad-up package

Additional Resources

Evaluation Board

STMicroelectronics EVAL-FDA903U Evaluation Boards

Used to evaluate the FDA903U automotive digital class-D power amplifier.

Learn Moreabout STMicroelectronics EVAL-FDA903U Evaluation Boards View Productsrelated to STMicroelectronics EVAL-FDA903U Evaluation Boards

Associated Amplifers

STMicroelectronics Automotive Class-D Audio Power Amplifiers

Features BCD technology with single and quad bridge configurations, I2S and TDM digital inputs.

Learn Moreabout STMicroelectronics Automotive Class-D Audio Power Amplifiers View Productsrelated to STMicroelectronics Automotive Class-D Audio Power Amplifiers
Published: 2019-07-30 | Updated: 2024-03-11