TFA9895UK中文资料Smart Audio Amplifier数据手册恩XP规格书

描述 Description

Overview The TFA9895 is a high efficiency class-D audio amplifier with a sophisticated speaker boost protection algorithm that features multi-band compression. It can deliver 2.65 W (RMS; THD = 1 %) output power into a 4 Ω speaker at a battery voltage of 3.6 V. The internal boost converter raises the supply voltage to 5.3 V, providing ample headroom for major improvements in sound quality.
The multi-band processing improves audio quality and apparent volume by allowing the gain to remain stable in most of the signal while the protection reacts to only those portions that would be unsafe. The TFA9895 also adds a high-frequency noise gate that improves the sound of poor-quality audio sources.

特性 Features

Maximum RMS output power:1.65 W into 8 Ω at 3.6 V power supply (THD=1%)
2.65 W into 4 Ω at 3.6 V power supply (THD=1%)

Dedicated speech mode with speech activity detector
Intelligent 5.3 V DC-to-DC converter maximizes audio headroom from any supply level
Reference output available for Acoustic Echo Cancellation (AEC) in the host processor
High efficiency and low power dissipation
I2S digital input and output audio interface
Sophisticated algorithm for speaker boost protection maximizes audio performance
Environmental awareness lets the system adapt automatically to acoustic and thermal changes