DC level shifting circuit for analog circuits
US5459427A · kind A · utility
7Cited by
18References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | May 6, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/003
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A DC translation circuit (200) provides maximum dynamic range in DC level shifting that is temperature and process invariant. The DC translation circuit (200) includes a bandgap reference (202) and current mirror circuit (204) for providing a reference current, Iref. An op-amp circuit (210) receives an AC signal centered about a first DC level, and translates the first DC level into a second DC level using the reference current, a current mirror circuit (208), op-amp circuit (210) and resistor (R2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.