The TFA9874 is a highly power-efficient class-D audio amplifier solution associated with speaker protection and boost algorithm. It can deliver up to 10.0 W peak output power into an 8 Ω speaker and up to 11.8 W peak output power into a 6 Ω speaker, at a supply voltage of 4.0 V. The internal adaptive DC-to-DC converter raises the supply voltage up to 10.0 V, providing ample headroom for major improvements in sound quality.
SPK Class-D
5.6 W into 8 Ω, 6.2 W into 4 Ω (THD < 1 %; VBAT = 4V)
Very low noise: < 14 μV
10 V Adaptive DC-DC Boost
Maximizes the output power of the Class-D audio amplifier while preventing large battery supply spikes and limiting quiescent power consumption
Power consumption
High system efficiency: 91 % peak efficiency for 600 mW sine wave
Low battery consumption: < 125 mA (Po = 380 mW, average music power)
Embedded SpeakerBoost Algorithm
Speaker damage protection for thermal mechanical damage overload and enhanced loudness on speaker
On host or DSP integrated only on TFA9894 (V2.0)
Name | Rights Description | Version | Date |
---|---|---|---|
TFA9874D E SDS | For Public | Rev.2.1 | 2020-12-10 |
TFA9874B SDS | For Public | Rev.2.1 | 2020-12-10 |
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