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TFA9894D_SDS - High Efficiency Class-D Audio Amplifier

General Description

The TFA9894D is a high efficiency 10 V boosted class-D audio amplifier with a sophisticated SpeakerBoost and protection algorithm.

It can deliver up to 5.6 W (AVG) output power into an 8 Ω speaker and up to 6.2 W (AVG) output power into 4 Ω speaker, at a battery supply voltage of 4.0 V.

Key Features

  • Sophisticated SpeakerBoost and protection algorithm that maximizes speaker performance while protecting the speaker:.
  • Fully embedded software, no additional license fee, or porting required.
  • Fully integrated solution, including DSP, amplifier, DC-to-DC, thermal sensing.
  • Adaptive excursion control - guarantees that the speaker membrane excursion never exceeds its rated limit.
  • Real-time temperature protection - direct measurement ensures that voice coi.

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TFA9894D_SDS High Efficiency Class-D Audio Amplifier Rev. 1 — 14 May 2019 Product data sheet 1 General description The TFA9894D is a high efficiency 10 V boosted class-D audio amplifier with a sophisticated SpeakerBoost and protection algorithm. It can deliver up to 5.6 W (AVG) output power into an 8 Ω speaker and up to 6.2 W (AVG) output power into 4 Ω speaker, at a battery supply voltage of 4.0 V. The internal adaptive DC-to-DC converter raises the power supply voltage up to 10 V, providing ample headroom for major improvements in sound quality. A safe working environment is provided for the speaker under all operating conditions. The TFA9894D maximizes acoustic output while ensuring membrane displacement and voice coil temperature do not exceed their rated limits.