Low power CMOS reference generator with low impedance driver
US4634894A · kind A · utility
28Cited by
4References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/147
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A low power, low output impedance, CMOS voltage reference with high source/sink current driving capability. A CMOS current mirror preamplifier includes matched transistor pairs having their W/L ratios scaled to reduce the level of current to the subthreshold region. A CMOS source follower output stage also has its transistors biased in the subthreshold region. Circuitry for protecting the preamplifier from the effects of supply voltage and output voltage bumps is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.