CONTROL CIRCUIT FOR POWER AMPLIFIER

The present invention provides a control circuit for a power amplifier, which can make output characteristics appropriate. The control circuit includes a first output unit configured to output a constant bias current for setting an electrical bias state of a bias circuit to the bias circuit; a second output unit configured to output a bias control current or constant voltage for controlling the electrical bias state of the bias circuit to the bias circuit; a resistor having one end connected to a reference potential; and a switch provided between another end of the resistor and an output terminal of the second output unit. 本发明提供一种功率放大器的控制电路，能够使输出特性变得适当。控制电路具备：第1输出部，将对偏置电路的电偏置状态进行设定的恒定的偏置电流输出到偏置电路；第2输出部，将对偏置电路的电偏置状态进行控制的偏置控制电流或恒定电压输出到偏置电路；电阻，一端与基准电位连接；和开关，设置在电阻的另一端与第2输出部的输出端子之间。