Semiconductor device
View Patent ↗It is an object of the present invention to surely protect a predetermined semiconductor element or a predetermined semiconductor element group in an analog block from a noise generated from a digital block. A semiconductor device according to the present invention includes a semiconductor substrate, a digital block to be a region in which a digital circuit is formed and an analog block to be a region in which an analog circuit is formed, arranged by separating an upper surface of the semiconductor substrate and a substrate potential fixing region provided on the semiconductor substrate so as to surround in a planar view the predetermined semiconductor element group in the analog block, and a pad connected to the substrate potential fixing region and receiving a predetermined potential from an external part.
1. A semiconductor device comprising:
a semiconductor substrate;
a digital block to be a region in which a digital circuit is formed;
an analog block to be a region in which an analog circuit is formed, the digital block and the analog block arranged by separating an upper surface of said semiconductor substrate;
a substrate potential fixing region provided on said semiconductor substrate so as to surround in a planar view a predetermined semiconductor element group or a predetermined semiconductor element in said analog block; and
a pad connected to said substrate potential fixing region and receiving a predetermined potential from an external part.
2. The semiconductor device according to claim 1 , wherein said pad applies a ground potential of said analog circuit.
3. The semiconductor device according to claim 1 , wherein said pad is used only for said substrate potential fixing region.
4. The semiconductor device according to claim 1 , wherein said substrate potential fixing region surrounds in a planar view each semiconductor element which is included in said semiconductor element group.