AMPLIFYING APPARATUS

The disclosure provides an amplifying apparatus including a plurality of amplifying circuits and an adjusting circuit. The input terminals of the amplifying circuits are coupled to a first common node. The output terminals of the amplifying circuits are coupled to a second common node. The adjusting circuit adjusts an input signal to generate an adjusted signal to the first common node; the adjusting circuit adjusts the signal of the second common node; or the adjusting circuit adjusts the input signal to generate the adjusted signal to the first common node and adjusts the signal of the second common node. The first control signal and the second control signal respectively control the amplifying circuits and the adjusting circuit to determine the gain, the linear power, and the output current of the amplifying apparatus.