CMOS integrated mid-supply voltage generator
US5302888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A CMOS on chip mid-rail voltage generation circuit is provided for an analog ground reference. A voltage divider establishes a current path between the high and low rail, and supplies a mid-level voltage to one input of a differential amplifier. A pair of series connected field effect transistors are also connected between the high and low voltage rails, with their common connection providing the input to the other input of the differential amplifier. A pair of open loop output transistors are also coupled in series between the high and low voltage rails, and each has their gate coupled to one of the series connected pair, and is also matched to that pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.