FDA903Q

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

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Overview

Product overview

Description

Description

The FDA903Q is a single bridge class D amplifier, designed in the most advanced BCD technology, intended for any automotive audio application (car radio, telematics and e-call, noise and tone generators, etc).

The FDA903Q integrates a high performance D/A converter together with powerful MOSFET outputs in class D, so it is very compact and powerful, moreover it reaches outstanding efficiency performances (90%).

It has a very wide operating range: it can be operated both with standard car battery levels (5.5-18 V operating, compatible to load dump pulse) and with external step-down generated voltages or emergency battery (since it is compatible to minimum 3.3 V operative).

The feedback loop includes the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion.

FDA903Q is configurable through I2C bus interface and integrates a complete diagnostics array specially intended for automotive applications including innovative open load and DC offset detection in play mode.

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, FDA903Q features a configurable amplitude limiter function, and can be optionally operated under no I2C mode ('legacy mode').

  • All features

    • AEC-Q100 qualified
    • Integrated 108 dB D/A conversion
    • I2S and TDM digital input (4/8/16CH TDM)
    • Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
    • Full I2C bus driving (3.3/1.8 V)
    • CISPR 25 - Class V (Fourth edition)
    • Very low quiescent current
    • Output lowpass filter included in the feedback allowing outstanding audio performances
    • Wide operating supply range from 3.3 to 18 V, suitable for car radio, telematics and e-call
    • MOSFET power outputs allowing high output power capability
      • 1 x 25 W /4 Ω @ 14.4 V, 1 kHz THD = 1%
      • 1 x 31 W /4 Ω @ 14.4 V, 1 kHz THD = 10%
    • 2 Ω loads driving
    • Amplitude limiter function (configurable through I2C)
    • I2C bus diagnostics:
      • Short to VCC/GND
      • Short load and open load detection (also in play mode)
      • Four thermal warnings
    • DC offset detector (also in play) and 'hot spot' detection
    • Clipping detector
    • Integrated thermal protection
    • Legacy mode ('no I2C' mode), 4 configurable settings
    • Short circuit and ESD integrated protections
    • Package: VFQFPN48 exposed pad down

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EVAL-FDA903Q

Evaluation boards for FDA803Q and FDA903Q power amplifiers

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The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.