STMicroelectronics has a 50W+50W stereo class-D amplifier IC which integrates analogue, logic, and high-voltage functions on a single chip.
The TDA7492 uses a BCD6S (Bipolar/CMOS/DMOS) process, which enables complementary NMOS and PMOS transistors in the high-power output circuitry, saving the external bootstrap capacitor and diode normally required by older processes.
The amplifier achieves THD+N of below 0.01%.
Built-in output filtering minimizes the external audio-filter requirement, and standby and mute functions are also integrated.
Other features include external synchronisation, which allows high-performance, multi-channel class-D amplifiers combining several individual ICs. The thermally enhanced Power SSO-36 package has an exposed upper heat slug allowing convenient attachment of a simple heatsink.