TDA8954 Class D audio power amplifier IC

TDA8954 Two-Channel Class D audio power amplifier IC

The TDA8954 is a two-channel audio power amplifier that uses Class D technology. For each channel, the audio input signal is converted into a digital Pulse Width Modulation (PWM) signal using an analog input stage and a PWM modulator. To drive the output power transistors, the digital PWM signal is fed to a control and handshake block and to high- and low-side driver circuits. This level-shifts the low-power digital PWM signal from a logic level to a high-power PWM signal switching between the main supply lines. A second-order low-pass filter converts the PWM signal to an analog audio signal that can be used to drive a loudspeaker.

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• Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier
  

• Smooth pop noise-free start-up and switch off
  

• 2-pin diagnostics for protection circuits
  

• Fixed frequency internal or external clock
  

• High efficiency ≈93 %
  

• Zero dead time switching
  

• Low quiescent current
  

• Advanced protection strategy: voltage protection and output current limiting
  

Applications of TDA8954 Class D audio power amplifier IC

• Home Audio Systems: Suitable for use in high-power home theater and Hi-Fi systems.
  

• Powered Speakers: Ideal for active speaker systems requiring high output power.
  

• Subwoofer Amplifiers: Provides the necessary power for driving subwoofers in audio systems.
  

• Car Audio Amplifiers: Can be used in automotive audio systems for high-power amplification.
  

Package Includes

• 1 x TDA8954 Class D audio power amplifier IC