Patent ID: 7795971

Claim:
An electronic circuit comprising: a first amplifying circuit to which a first input signal is inputted; a second amplifying circuit to which a second input signal is inputted; a first drain ground amplifying transistor provided between a first power source node and an output node with control over the gate by the output from the first amplifying circuit; a second drain ground amplifying transistor provided between the first power source node and the output node with control over the gate by the output from the second amplifying circuit; a common load element provided between the output node and a second power source node; a first negative feedback path for negative feedback from the output node to the input of the first amplifying circuit; a second negative feedback path for negative feedback from the output node to the input of the second amplifying circuit; and a combining circuit which combines an output signal from the first amplifying circuit and an output signal from the second amplifying circuit, wherein the combining circuit outputs voltage corresponding to the voltage of the output signal from the amplifying circuit providing a smaller volume of feedback by the negative feedback control in the first and second amplifying circuits.