Methods and apparatus for tuning a current source and selecting a reference voltage to maintain a transconductance and transition frequencies of transistors of an inverter
US8963621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Feb 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit including a current source, an inverter, and a device. The current source is configured to receive a first reference voltage and supply an output current. The inverter has a transconductance. The inverter includes a first transistor having a source and a drain and a second transistor having a source. The source of the first transistor is connected to the current source. The source of the first transistor is configured to receive a portion of the output current. The source of the second transistor is connected to the drain of the first transistor. The device is configured to select the first reference voltage such that the output current of the current source varies with changes in a temperature of the current source to maintain the transconductance of the inverter at a same value and prevent changes in respective transition frequencies of both the first transistor and the second transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.