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1 x 10 W class D digital input automotive power amplifier with diagnostics, wide voltage operation range for car audio and telematics

Quantity $ per Unit Savings
1 - 9$5.320%
10 - 24$4.7710%
25 - 99$4.5215%
100 - 249$3.9127%
250 - 499$3.7130%
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Parameter NameParameter Value
Supply Voltage Min Volt3.3
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameQFN-32L WF

The FDA803S is the new ST single channel class-D audio amplifier, specifically designed for automotive applications. The FDA803S integrates a 24-bit, 100 dB DAC conversion and PWM class-D output stage with feedback before LC filter. This configuration enables the design of a compact and inexpensive application.

The FDA803S supports I2S and TDM digital bit stream up to 16CH with several sampling frequencies from 8 kHz up to 96 kHz. FDA803S embeds a complete diagnostic in play to support the most demanding OEM requirements in terms of speaker control and system robustness/ reliability.

The FDA803S supports start stop cranking down to 3.3 V and it is available in a very compact and thin QFN 5x5 package. Thus the FDA803S is suitable for any level of automotive application especially e-Call and Telematics.

Key features
  • AEC-Q100 qualified
  • Integrated 100 dB D/A conversion
  • I2S and TDM digital input (up to 16CH TDM)
  • Selectable input sample rate frequency (8/16/32/44.1/48/96 kHz)
  • Wide supply operating range: 3.3 V - 18 V
  • PWM frequency switching selectable by I2C
    • 352.8 kHz, 384kHz, 411.6 kHz, 448 kHz
  • 2 I2C addresses
  • MOSFET power outputs
    • Typ 10 W 4 Ω at 14.4 V, 1 kHz THD = 1%
    • Typ 5 W 8 Ω at 14.4 V, 1 kHz THD = 1%
  • Noise: 38 μV A-weighted: 20 kHz
  • 8 Ω, 4 Ω driving capability
  • Input amplitude limiter (configurable through I2C)
  • I2C full configurability and diagnostic
    • Startup diagnostic
    • Input voltage amplitude limiter function (configurable through I2C)
    • 4 x Thermal warning
    • DC diagnostic
    • OCP protection scheme configurable
    • Mute time configuration
  • Capability to run complete diagnostic in play
    • Configurable Clipping Detector
    • One of the Thermal Warnings
    • Over Current Protection
    • Open Load detection
    • High voltage mute
  • 2 CD/Diag pin
  • Integrated ESD and short circuit protection
  • QFN32 wettable flanks
  • Tested according to CISPR 25 - Class V (Fourth edition)