📢 New offer this month! Get FREE SHIPPING for your automotive project! Order now! 🛒





2x150 W/1x300 W class D digital input automotive power amplifier with diagnostics features and low voltage

Quantity $ per Unit Savings
1 - 500$15.160%
Contact Sales
Out of stock
Parameter NameParameter Value
Supply Voltage Min Volt5.5
Supply Voltage Max Volt35.0
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius105.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameLQFP

The FDA802AB is a dual bridge class D amplifier, designed in the most advanced BCD technology specially intended for car radio applications.

The FDA802AB integrates 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 (115 dB S/N ratio with 110 dB of dynamic range).

Thanks to the high-voltage MOSFET output stages it can operate both under standard car battery (6 -18 V) and under boosted power supply (up to 50 V) to reach the highest possible power with integrated solution.

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.

FDA802AB is fully configurable through I2C bus interface and integrates a complete diagnostics array specially intended for automotive applications.

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

Moreover FDA802AB is able to work with power supply as low as 5.5 V, thus supporting the most recent low voltage ('start-stop') car-makers specification.

Key features
  • AEC-Q100 qualified
  • Integrated 110 dB D/A conversion
  • I2S and TDM digital input (3.3/1.8 V)
  • Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
  • Full I2C bus driving (3.3/1.8 V) with 8 different I2C bus addresses
  • EMI control for FM/AM compatibility
  • EMI compliance evaluated following normative CISPR25 (class V)
  • Low radiation function (LRF)
  • Very low quiescent current
  • Output low-pass filter included in the feedback allowing outstanding audio performances
  • Wide operating supply range: target 5.5 V-50 V
  • Supply voltage monitoring on I2C
  • MOSFET power outputs allowing high output power capability under step-up voltage:
    • 2x120 W /4 Ω at 35 V, 1 kHz THD = 1%(2x150 W /4 Ω at 35 V, 1 kHz THD = 10%)
    • 2x140 W /8 Ω at 50 V, 1 kHz THD = 1%(2x180 W /8 Ω at 50 V, 1 kHz THD = 10%)
    • 2x270 W /8 Ω at 50 V max output power
  • Operation under standard car battery with high output power:
    • 2x22 W /4 Ω at 14 V, 1 kHz THD = 1%(2x28 W /4 Ω at 14 V, 1 kHz THD = 10%)
    • 2x37 W /2 Ω at 14 V, 1 kHz THD = 1%(2x46 W /2 Ω at 14 V, 1 kHz THD = 10%)
  • Possibility to drive 2 Ω loads:
    • up to 18 V in normal mode
    • up to 35 V in parallel mode
  • Independent channel operation
  • I2C bus diagnostics:
    • Short to VCC/GND diagnostic (including soft shorts up to 1 kΩ)
    • DC load diagnostic
    • AC load diagnostic (working both with internally generated and externally generated tone)
  • Digital impedance-meter (DIM)
  • Integrated fault protection
  • Input and output offset detector
  • Clipping detector
  • Legacy mode ('no I2C' mode)
  • Short circuit and ESD integrated protections
  • Package: LQFP64 exposed pad up