4x135W / 2x270W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver

The FDA4100LV 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 to 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 is including the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion independently of the inductor and capacitor quality.

FDA4100LV is fully configurable through I2C bus interface and integrates a full diagnostics array specially intended for automotive applications (with the status of each single speaker).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.A built-in step-up driver allows to provide high output power even using the standard 14 V supply voltage.

Moreover FDA4100LV is able to work down to 6 V supply, 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: 44.1kHz, 48 kHz, 96 kHz, 192 kHz
  • MOSFET power outputs
  • Step-up driver included
  • EMI control for FM/AM compatibility
  • EMI compliance at the CEI EN 55025 (2009-10)
  • Dithering possibility
  • Very low component count
  • Output lowpass filter included in the feedback
  • Low radiation function (LRF)
  • High output power capability
    • 4 x 85 W/4 Ω @ 25 V, 1 kHz, 10 % THD
    • 2 x 150 W/2 Ω @ 25 V, 1 kHz, 10 % THD
  • Max. output power
    • 4 x 135 W/4 Ω @ 25 V, 1 kHz
    • 2 x 270 W/2 Ω @ 25 V, 1 kHz
  • Full I2 C bus driving (3.3/1.8 V):
    • Independent front/rear soft play/ mute
    • I2 C diagnostics (DC and AC load detection, internal test signal 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”)

Design

Technical Documentation

Product Specifications
Description Version Size
DB1997 DB1997: 4 x 135 W / 2 x 270 W PWM digital input power amplifier with I2C diagnostics, step-up driver and low voltage operation 2.0 245 KB

Publications and Collaterals

Flyers
Description Version Size
Car-audio power amplifiers 1.0 1 MB
FDA series 1.0 2 MB
FDA801 and FDA801B Full digital audio amplifiers for car infotainment systems 1 MB
Selection Guides
Description Version Size
Power amplifiers and voltage regulators 750 KB




Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
FDA4100LV Active 1000 10 HI-QUAD92 14x20 Tray -40 105 NEC EAR99 MALAYSIA MORE INFO
FDA4100LV-T Preview 1000 10 HI-QUAD92 14x20 Tape And Reel -40 105 NEC EAR99 - MORE INFO
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(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
FDA4100LV ActiveHI-QUAD92 14x20AutomotiveEcopack1 (*) 0 0
FDA4100LV-T PreviewHI-QUAD92 14x20AutomotiveEcopack2 (**)
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(**) 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.

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