Method for adjusting threshold voltage and circuit therefor
US7944299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2010 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/205
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and circuit for changing a threshold voltage of a transistor. The circuit includes a sense circuit coupled to a switching transistor, a circuit transistor and to one terminal of a resistor. The other terminal of the resistor is connected to a body contact. The switching transistor directs current along one of two different paths in response to an input voltage sensed by the sense circuit. When the switching transistor directs a first current along one path, the first current is steered towards the resistor and flows through the resistor in one direction and when the switching transistor directs a second current along the other path, the second current is directed towards the resistor and flows through the resistor in the opposite direction from the first current. Steering the currents varies the potential of a body with respect to the potential at the source of the circuit transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.