The TFA9878 is a high efficiency 10.0 V boosted class-D audio amplifier. It can deliver up to 10.0 W peak output power to an 8 Ω speaker and up to 11.8 W peak output power in 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.
High output power: 5.6 W (average) into 8 Ω at 4.0 V supply voltage (THD = 1 %)
Supports handset and hands-free speaker configurations
Ultra-low noise 7 μV mode in handset call with moderate output power
High efficiency, low power dissipation speaker driver
Low battery consumption < 125 mA (Po = 380 mW, average music power)
Adaptive DC-to-DC converter increases the supply voltage smoothly while switching between fixed boost and adaptive boost modes. It thus, prevents the large battery supply spikes and limits quiescent power consumption
Wide supply voltage range (fully operational from 2.7 V to 5.5 V)
SoundWire v 1.1 MIPI-compliant interface for audio and control
Legacy I2C-bus control interface (400 kHz)
Legacy TDM audio interface
Low latency 64 fs, 128 fs PDM through SoundWire
Speaker current and voltage monitoring for acoustic echo cancellation (AEC) at the host
16 kHz / 32 kHz / 44.1 kHz / 48 kHz sample frequencies supported
Ultrasonic support with sample frequency of 96 kHz
Programmable interrupt control through a dedicated interrupt pin
Low RF susceptibility
Excess temperature protection
15 kV system-level ESD protection without external components on amplifier output
| Name | Rights Description | Version | Date |
|---|---|---|---|
| TFA9878 SDS | For Public | Rev.3.1 | 2020-12-10 |
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