Semiconductor integrated circuit having a digital circuit
US5231300A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1991 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Jun 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/00
Abstract
In a semiconductor integrated circuit, a digital circuit section and an analog circuit section are formed on a substrate. A pair of first power source lines connects a circuit element in the digital circuit section to a power source, while a pair of second power source lines connects a substrate region in the digital circuit section to the power source. The pair of second power source lines is formed separately from the pair of first power source lines in the digital circuit section. The substrate region in the digital circuit section is surrounded by a guard ring well, to which one of the pair of second power source lines is connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.