Communication semiconductor integrated circuit device and electrical apparatus

摘要

A communication semiconductor integrated circuit (high frequency IC) that has a function of differentially-singly converts and outputs a transmitted signal suppressing deterioration of a harmonic suppression characteristic and enables miniaturization and an electronic component (high frequency module) that mounts the communication semiconductor integrated circuit are provided. In the communication semiconductor integrated circuit (high frequency IC) having a limiter that amplifies a modulated and up-converted transmitted signal and supplies a power amplifier with the signal, an unbalanced reduction means having, for example, differential MOS transistors is provided in collectors or drains of differential transistors that construct the limiter to output pins and continue to apply a current to the output pins and reduces the impedance of the transistor on an off side even when one of the transistors enters an off state in accordance with an input signal in parallel to the transistor.