| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress propagation of noise from a digital region to an analog region in a semiconductor device where the digital and analog regions are mixedly mounted.SOLUTION: The semiconductor device 100 having the digital region 120 and the analog region 130 mixedly mounted therein includes an annular seal ring 140 that surrounds an outer periphery of the digital region 120 and the analog region 130 in a plan view, a guard ring 150 that is provided in an area surrounded by the seal ring 140 between the digital region 120 and the analog region 130 so as to isolate the analog region 130 from the digital region 120 and so as to be electrically connected to the seal ring 140, and an electrode pad 160a electrically connected to the guard ring 150 in the vicinity of the guard ring. The electrode pad 160a is connected to an external ground terminal (180a) as ground potential. |
