ST offers a complete class-AB product portfolio. As well as standard class-AB power amplifiers, ST proposes audio amplifiers in class SB (Single-ended Bridge) and SB-I (SB improved). As a result of their high efficiency, these classes reduce power dissipation by up to 50% compared to standard class AB, simplifying thermal management in current power sets. Moreover, ST has introduced a digital input to offer a clean sound, immune to external interferences. Amplifiers can now be directly connected to the DSP output without any signal conversion. ST also proposes amplifiers that are compatible with start-stop and hybrid engines.

ST's class-AB automotive audio amps offer:

  • Clean, powerful audio
  • A wide portfolio, single-channel devices to powerful quad-channel single-chip devices
  • Robust designs with integrated protection against short circuits, ESD, load dumping, over-temperature
  • Ability to drive very low impedance speakers (as low as 1 ohm)
  • Products compliant with new stop-start engine and hybrid engine standards
  • Optional I²C interface and diagnostics
  • Optional digital input
  • Optional augmented efficiency

Class AB automotive audio amplifiers

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