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德州仪器的20W D 类立体声音频放大器IC TPA3100D2PHPr
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20W Stereo Cl*-D Audio Power Amplifier

说明
The TPA3100D2 is a 20-W (per channel) efficient, Cl*-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3100D2 can drive stereo speakers as low as 4 . The high efficiency of the TPA3100D2, 92%, eliminates the need for an external heat sink when playing music.
TPA3100D2是一个20瓦（每声道）*率，D类音频功率放大器驱动桥需要而设的立体声扬声器。 TPA3100D2可驱动立体声扬声器，4个低。 TPA3100D2的*率，92％，播放音乐时无需外部散热片。

The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, 36 dB.

The outputs are fully protected against shorts to GND, VCC, and output-to-output shorts with an auto recovery feature and monitor output.

特性
20-W/ch into an 8- Load From a 18-V Supply
10-W/ch into an 8- Load From a 12-V Supply
15-W/ch into an 4- Load From a 12-V Supply
Operates from 10 V to 26 V
92% Efficient Cl*-D Operation Eliminates Need for Heat Sinks
Four Selectable, Fixed Gain Settings
Differential Inputs
Thermal and Short-Circuit Protection With Auto Recovery Feature
Clock Output for Synchronization With Multiple Cl*-D Devices
Surface Mount 7 mm × 7 mm, 48-pin QFN Package
Surface Mount 9 mm × 9 mm, 48-pin HTQFP Package

APPLICATIONS  应用
Televisions  电视机
*音频混合器
互联网广播播放器
视频通信系统
音频接口盒：便携式设计