Analog-to-digital converter and method of fabrication
US5994755A · kind A · utility
27Cited by
45References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/365
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated circuit has a pseudosubstrate 6060 with an isolation moat 9505. Substrate 6001 has one conductivity and a subcircuit region 6060 has an opposite conductivity. Digital CMOS devices are formed in the subcircuit over region 6060 and operate between zero to +5 volts. Analog devices are formed over the rest of the substrate and operate between plus and minus 5 volts. The moat 9505 isolates the digital CMOS devices from the analog devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.