Texas Instruments TPA3136D2 D 类音频放大器

Texas Instruments TPA3136D2 D 类音频放大器用于驱动高达 10W/6Ω 或 8Ω（每个通道）的桥接立体声扬声器。采用扩展频谱控制方案的高级 EMI 抑制技术既能实现在输出端使用成本较低的铁氧体磁珠滤波器，同时又能满足 EMC 要求，降低了系统成本。 TPA3136D2 器件不仅完全防止短路和过载，SpeakerGuard 扬声器保护电路还包含一个功率限制器和一个直流检测电路，以保护所连接的扬声器。直流检测及引脚至引脚、引脚至地和引脚至电源短路保护电路可以防止扬声器在生产过程中发生输出直流和引脚短路。同时充分保护输出，防止 GND、PVCC、输出至输出短路。短路保护和热保护包含自动恢复功能。

特性

2×10W/ch into 6Ω loads at 10% THD+N from a 12V supply
2×10W/ch into 8Ω loads at 10% THD+N from a 13V supply
Up to 90% efficient class-D operation (8Ω) eliminates the need for heat sinks
<0.05% THD+N at 1W/4Ω/1kHz
Wide supply voltage range allows operation from 4.5V to 14.4V
Inductor-free operation
Enhanced EMI performance with spread spectrum

SpeakerGuard™ speaker protection includes power limiter and DC protection
Robust Pin-to-Pin, Pin-to-Ground, and Pin-to-Power short circuit protection and thermal protection
26dB fixed gain
Single-ended or differential analog inputs
Click and pop free startup