To solve the problem that a circuit area is increased.

An RSSI circuit includes: a plurality of serially connected limiting amplifiers for inputting input signals; a plurality of rectifiers for generating respective first currents corresponding to the input signals or signals amplified by the plurality of limiting amplifiers; a first resistance for generating an output voltage signal in accordance with a first total current of the first currents; and a bias generation circuit for outputting a bias voltage signal to adjust the first currents. The bias generation circuit includes: a replica rectifier having the same internal configuration as that of each first rectifier and generating a replica current in accordance with a signal to be inputted; a replica resistance for generating a replica voltage corresponding to the replica current; and a comparison circuit for comparing a reference voltage with the replica voltage and generating a bias voltage signal corresponding to the comparison result.