Stock Code: 603160

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Audio Amplifier

TFA9896: 6.1V Highly Power-Efficient DSP Embedded Class-D Audio Amplifier


The TFA9896 is a high-efficiency Class-D audio amplifier with a sophisticated SpeakerBoost protection algorithm. It can deliver 2.1 W (RMS; THD = 1%) output power into an 8 Ω speaker at a battery voltage of 3.6 V. The internal boost converter raises the supply voltage to 6.1 V, providing ample headroom for major improvements in sound quality.


  • Boost Voltage – 6.1 V

  • Maximum RMS output power:

    1. 2.1 W into 8 Ω (THD<1%; Vbat=4 V)
    2. 3.2 W into 4 Ω (THD<1%; Vbat=4 V; RL>3.4 Ω)
  • Low Noise: 27 uV @ normal gain mode; 19 uV @ low gain mode

  • Ultra-low power idle mode 22 mW @ silent input (DSP bypassed)

  • Optimized battery consumption of 169 mW at Pout =130 mW average

  • Total system efficiency >83% (Pout=1 W, RL=8 Ω and Vbat=4 V)

  • 2xTDM full duplex (4-lines)

  • Enhanced battery safeguard

System Block Diagram

Application Block Diagram






  • TFA9896_SDS_Rev.2.0 DS-VAA-00012-EN Rev.2.0 2020-01-21 PDF

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