Local mid-rail generator circuit
US5362988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Dec 2, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage generation circuit (10) is provided including a first plurality of transistors (12, 14, 16, 18) having source/drain paths coupled in series to establish a first current path between a first voltage rail and a second voltage rail, the first transistors (12, 14, 16, 18) matched to provide a preselected intermediate voltage at a node (A) along the first current path. A second plurality of transistors (20, 22, 24, 26) are provided having source/drain paths coupled in series to establish a second current path between the voltage rails, and coupled to the first transistors (12, 14, 16, 18) such that current flow in the second current path selected ones of mirrors current flow in the first current path, the second plurality of transistors (20, 22, 24, 26) matched to provide a voltage substantially equal to the intermediate voltage at a node (B) along the second current path. A pair of output transistors (28, 30) are provided having source/drain paths coupled in series to establish a third current path between the voltage rails. A first one of the output transistors (28) is coupled as a current mirror with a first one of the second plurality of transistors (22), and a second one …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.