FDA450LV:4x50W low voltage operation PWM digital input power amplifier with I2C diagnostics

The FDA450LV is a new BCD- SOI (silicon on insulation) technology QUAD BRIDGE class D amplifier, specially intended for car radio applications.

Thanks to the technology used, it is possible to integrate a high performance D/A converter together with powerful MOSFET outputs in class D, to get an outstanding efficiency compared with the standard class AB.

The integrated D/A converter allows to reach outstanding performances (110 dB S/N ratio with 108 dB of dynamic range). The feedback loop includes the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion independently of the inductor and capacitor quality.

FDA450LV is fully configurable through I2C bus interface and integrates a full diagnostics array specially intended for automotive applications.

Thanks to the solutions implemented to solve the EMI problems, the device is conceived to be used in the standard single DIN car-radio box together with the tuner.

The possibility to parallelize the outputs allows to drive both 2 Ω and 1 Ω speakers.

Moreover FDA450LV is able to work with power supply as low as 6 V, thus supporting the most recent low voltage ('start-stop') car-makers specification.

Key Features

  • Integrated 108 dB D/A conversion
  • I2 S and TDM digital input (3.3/1.8 V)
  • Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
  • MOSFET power outputs
  • EMI control for FM/AM compatibility
  • EMI compliance at the CEI EN 55025 (2009-10)
  • Dithering possibility
  • Very low external component count filter
  • Output lowpass filter included in the feedback
  • Low radiation function (LRF)
  • Max. output power
    • 4 x 50 W/4 Ω @ 15.2 V, 1 kHz
  • High output power capability
    • 28 W/4 Ω 10 % THD, Vd = 14.4 V
  • Full I2 C bus driving (3.3/1.8 V):
    • Independent front/rear soft play/ mute
    • I2 C bus diagnostics (including DC and AC load detection, test signal internally generated)
  • Very flexible fault detection though integrated diagnostic
  • Offset detector (play or mute mode)
  • Four independent short circuit protection
  • Clipping detector
  • C-MOS compatible enable pin (3.3/5 V)
  • ESD protection
  • 6 V operation (“Start - Stop”)
Product Specifications
DescriptionVersionSize
DB1996: 4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation2.1224 KB
Flyers
DescriptionVersionSize
Car-audio power amplifiers1.01 MB
FDA series1.02 MB
FDA801 and FDA801B Full digital audio amplifiers for car infotainment systems1 MB
Selection Guides
DescriptionVersionSize
Power amplifiers and voltage regulators750 KB
Sample & Buy
Part NumberQuantityUnit Price (US$) *PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
FDA450LV10009TQFP 100 14x14x1.0Tray-4085NECEAR99-
FDA450LV-T10009TQFP 100 14x14x1.0Tape And Reel-4085NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
FDA450LVTQFP 100 14x14x1.0AutomotiveEcopack2new_ipc-wspc-1752a_aav)-uj13cfa_signed.pdf
FDA450LV-TTQFP 100 14x14x1.0AutomotiveEcopack2new_ipc-wspc-1752a_aav)-uj13cfa_signed.pdf
4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation FDA450LV
4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation FDA450LV
4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation FDA450LV
4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation FDA450LV
ST SPI protocol L99PM72PXP
new_ipc-wspc-1752a_aav)-uj13cfa_signed.pdf FDA450LV