Automotive Class-D Audio Power Amplifiers

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These audio amps have already been chosen by several automotive audio makers for both boosters and head units, thanks to:

  • High amplification efficiency ratings
  • Robust automotive design with integrated protection against overstresses, such as short circuits, ESD, load dump, or over-temperature
  • A very advanced diagnostic processor
  • A proprietary feedback loop architecture, addressing the need for lower system cost and electromagnetic emissions
  • Fully digital processing
  • Ability to drive very low impedance speakers (as low as 1 ohm)
  • Compliance with new stop/start engine and hybrid engine standards
Part NumberGeneral DescriptionOutput Power(Pout) (@Vcc=14.4V, 10% THD, RL=4 Ω) typ (W)Number of Channels nom ()DiagnosticsLoad min (Ω)Supply Voltage(Vcc) min (V)Package
FDA2100LV2x180 W / 1x300 W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver292by I2C bus16TQFP 64 10x10x1.0
FDA4100LV4x135W / 2x270W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver294by I2C bus16HI-QUAD92 14x20
FDA450LV4x50W low voltage operation PWM digital input power amplifier with I2C diagnostics294by I2C bus16TQFP 100 14x14x1.0
TDA7570Single or dual PWM BTL output702by pin--HI-QUAD 64 14x14
TDA7572Single PWM BTL output power amplifier with built-in step-up2001by I2C bus28HI-QUAD 64 14x14