FDA801:4x50 W class-D digital input power amplifier with I2C diagnostics and low voltage operation

FDA801 is a new BCD technology quad BRIDGE class D amplifier, specially intended for automotive 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 from the inductor and capacitor quality.

FDA801 is fully configurable through I2C bus interface and integrates a full diagnostics array specially intended for automotive applications. Thanks to the solutions implemented to contain EMI emissions, the device is intended to be used in the standard single DIN car-radio box together with the tuner.

Moreover FDA801 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 110 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
  • Class-D channels with 93% efficiency
  • EMI control for AM compatibility
  • EMI compliance evaluated following normative IEC61967-4 and IEC62132-4
  • Low radiation function (LRF)
  • Idle tones free DAC
  • Output lowpass filter included in the feedback allowing lower cost filter components
  • Max. output power
  • High output power capability
  • Full I2 C bus driving (3.3/1.8 V):
    • Channels independent tristate
    • Channel independent soft play/mute
    • I2 C bus diagnostics, including DC and AC load detection
  • Integrated fault protection
  • Input and output offset detector
  • Clipping detector
  • ESD protection
  • 6 V operation (“Start - Stop” engines compatibility)
  • 2 and 1 Ω load driving capability
Product Specifications
DescriptionVersionSize
DB2748: 4 x 50 W class-D digital input power amplifier with I2C diagnostics and low voltage operation1.0244 KB
Flyers
DescriptionVersionSize
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
FDA801-VYY--LQFPTray-40105NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
FDA801-VYYLQFPAutomotiveEcopack2ipc-wspc-1752a_a8vy-ur50bz1_signed.pdf
ipc-wspc-1752a_a8vy-ur50bz1.xml
4 x 50 W class-D digital input power amplifier with I2C diagnostics and low voltage operation FDA801
4 x 50 W PWM digital input power amplifier with built-in diagnostics features and low voltage operation FDA450LV
ST SPI protocol L99PM72PXP
ipc-wspc-1752a_a8vy-ur50bz1_signed.pdf FDA801
ipc-wspc-1752a_a8vy-ur50bz1.xml FDA801