2x150 W - 1x300 W class D digital input automotive power amplifier with load value recognition and low voltage operation

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  • The FDA802B is a dual bridge class D amplifier, designed in the most advanced BCD technology specially intended for car radio applications.

    The FDA802B integrates a high performance D/A converter together with powerful MOSFET outputs in class D, to get an outstanding efficiency compared to the standard class AB.
    The integrated D/A converter allows to reach outstanding performances (110 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 is including the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion independently from the inductor and capacitor quality.
    FDA802B 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 FDA802B 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.
    The device provides a breakthrough innovative digital impedance-meter which is able to communicate via I2C the output load value.

    Key Features

    • AEC-Q100 (rev. G) 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 IEC61967-4 and IEC62132-4
    • 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
    • MOSFET power outputs allowing high output power capability under step-up voltage:
      • 2 x 120 W /4 Ω @ 35 V, 1 kHz THD = 1%(2 x150 W /4 Ω @ 35 V, 1 kHz THD =10%)
      • 2 x 140 W /8 Ω @ 50 V, 1 kHz THD = 1% (2 x180 W /8 Ω @ 50 V, 1 kHz THD =10%)
      • 2 x 270 W /8 Ω @ 50 V max output power
    • Operation under standard car battery with high output power:
      • 2 x 22 W /4 Ω @ 14 V, 1 kHz THD = 1%(2 x 28 W /4 Ω @ 14 V, 1 kHz THD = 10%)
      • 2 x 37 W /2 Ω @ 14 V, 1 kHz THD = 1%(2 x 46 W /2 Ω @ 14 V, 1 kHz THD = 10%)
    • Possibility to drive 2 Ω loads (until 18 V)
    • Independent channel operation
    • I2C bus diagnostics:
      • Short to Vcc/GND diagnostic (including soft shorts up to 1k Ω)
      • DC load diagnostic
      • AC load diagnostic (working both with internally generated and externally generated tone)
    • 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

Sample & Buy

Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
FDA802B-VYY
Active
1000 7.3 LQFP Tray EAR99 ITALY No availability of distributors reported, please contact our sales office
FDA802B-VYT
Active
1000 7.3 LQFP Tape And Reel EAR99 ITALY No availability of distributors reported, please contact our sales office

FDA802B-VYY

Marketing Status

Active

Quantity

1000

Unit Price (US$)

7.3*

Unit Price (US$)

7.3

Package

LQFP

Packing Type

Tray

ECCN (US)

EAR99

Country of Origin

ITALY

FDA802B-VYT

Marketing Status

Active

Quantity

1000

Unit Price (US$)

7.3*

Unit Price (US$)

7.3

Package

LQFP

Packing Type

Tape And Reel

ECCN (US)

EAR99

Country of Origin

ITALY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DB3312
      2x150 W/1x300 W class D digital input automotive power amplifier with load value recognition and low voltage operation
      2.0
      297.6 KB
      PDF
      DB3312

      2x150 W/1x300 W class D digital input automotive power amplifier with load value recognition and low voltage operation

Publications and Collaterals

    • Description Version Size Action
      FDA Family – Full digital audio amplifiers for car infotainment systems 1.0
      911.83 KB
      PDF

      FDA Family – Full digital audio amplifiers for car infotainment systems

    • Description Version Size Action
      Power amplifiers and voltage regulators
      750.29 KB
      PDF

      Power amplifiers and voltage regulators

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
FDA802B-VYT
Active
LQFP Automotive Ecopack2
FDA802B-VYY
Active
LQFP Automotive Ecopack2

FDA802B-VYT

Package:

LQFP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP

Grade

Automotive

RoHS Compliance Grade

Ecopack2

FDA802B-VYY

Package:

LQFP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.