Reference voltage generators including first and second transistors of same conductivity type and at least one switch
US6275100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Feb 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/247
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Reference voltage generators can be made relatively insensitive to variations in threshold voltages due to device fabrication processes by providing first and second transistors of the same conductivity type that are connected to one another and between first and second power supply voltages, such that the first transistor operates below the threshold voltage thereof and the second transistor operates above the threshold voltage thereof. The first transistor includes a gate that is coupled to a first node connected to a first power supply voltage and that is connected between an output reference voltage terminal and a second node that is connected to a second power supply voltage. The second transistor includes a gate that is coupled to the second node and is connected between the first node and the second power supply voltage. At least one switch also may be included, which disconnects the reference voltage generator from the first and second power supply voltages in response to a control signal, to thereby allow reduced standby power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.