SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

Circuit blocks (1 to 3) formed by the CMOS process and analog control lines 5−1, 5−2, and 5−3 connected to them are arranged in such a manner that they are not overlapped in the layout. More specifically, the analog control lines 5−1 and 5−2 are arranged outside an AM/FM common circuit block (3) to roundabout it. That is, signal lines in the AM/FM common circuit block (3) are arranged apart from the analog control lines 5−1 and 5−2 as much as possible, so that the signal lines in the AM/FM common circuit block (3) are not connected to the analog control lines 5−1 and 5−2 via a parasitic capacitance, thereby suppressing interference between the signal lines and the analog control lines 5−1 and 5−2.