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 to 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:
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
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