Class-AB Audio Power Amplifiers  

ST offers the widest portfolio of class AB audio amplifiers, offering:

  • Mono, stereo and multichannel solutions (up to 4.0 channels)
  • Wide range of output power options
  • Single-ended and BTL operating modes
  • A wide range of packages for insertion and surface-mount applications

STA540 power amplifier

The STA540 contains four single-ended, class-AB audio amplifiers assembled in a Multiwatt15 package.
These amplifiers are used for high-quality sound applications. Each amplifier has integrated short-circuit and thermal protection and diagnostic functions. Two amplifiers can be paired up for applications requiring high power output.

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