Patent ID: 6384479
Filing Date: 2002-05-07
Classification: H01L

Abstract:
A semiconductor integrated circuit device having an analog circuit and a digital circuit formed on a semiconductor substrate, comprising:a first block in which a high frequency circuit belonging to said digital circuit is formed; a second block in which a low-frequency circuit belonging to said digital circuit is formed; a high-frequency conductor layer formed on the semiconductor substrate and having conductors for wiring the high-frequency circuit formed in said first block; and a low-frequency conductor layer formed on the semiconductor substrate and having conductors for wiring the low-frequency circuit formed in said second block, the conductors of said low-frequency conductor layer having a higher resistance than the conductors of said high-frequency conductor layer; wherein circuit elements in the first block are wired using a plurality of metal conductors among the conductors of said high-frequency conductor layer laid above said circuit elements, and circuit elements in the second block are wired using a first metal conductor and a second conductor among the conductors of said low-frequency conductor layer laid above said circuit elements, the second conductor having a higher resistance than the metal conductors of said high-frequency conductor layer.