The output stage of the TDA7490 amplifier in class D The core of the end stage class d circuit is TDA7490 from the company STMicroelectronics. The way in which this amplifier works, was discussed above. Here will be dismantled... Electronics Projects, TDA7490 Class-D Amplifier Project "audio amplifier circuits, class d amplifier circuit, ic amplifier, " Date 2019/08/04