TDA7492是市场上首款额定功率50W+50W的放大器，采用支持单片集成模拟、逻辑和高压功能的先进的第六代BCD6S制程 (双极/CMOS/DMOS)。与其它的D类放大器相比，ST的BCD6S制程取得了更高芯片面积能效比，同时还降低了串扰，提高了音质。此外，BCD6S准许在高功率输出电路内集成NMOS和PMOS互补晶体管，省去了旧式制程所需的外部自举电容和阴极负载二极管。这种方法体系简化了设计，节省电路板空间，提高产品设计的可靠性，并优化了材料成本。

TDA7492主要特性:
50 W + 50 W continuous output power atTHD = 10% with RL = 6 Ω and VCC = 25 V
40 W + 40 W continuous output power atTHD = 10% with RL = 8 Ω and VCC = 25 V
Wide-range single-supply operation (8 - 26 V)
High efficiency (η = 90%)
Four selectable, fixed gain settings of nominally 21.6dB, 27.6dB, 31.1 dB and 33.6dB
Differential inputs minimize common-mode noise
Standby and mute features
Short-circuit protection
Thermal overload protection
Externally synchronizable
ECOPACK®, environmentally-friendly package

TDA7492 应用原理图