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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