Stage having controlled variable resistance load circuit for use in voltage controlled ring oscillator
US6198357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/148
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A stage for a ring oscillator, the stage including a first p-channel transistor having a gate defining a control node, having a source adapted to be coupled to a supply voltage, and having a drain; a second p-channel transistor having a gate coupled to the control node, having a source coupled to the supply voltage, and having a drain; a first n-channel transistor having a gate defining a first input, having a drain coupled to the drain of the first p-channel transistor and defining a first node, and having a source; a second n-channel transistor having a gate defining a second input, having a drain coupled to the drain of the second p-channel transistor and defining a second node, and having a source; a current source coupled to the sources of the first and second n-channel transistors directing current from the sources of the first and second n-channel transistors; a first resistor coupled between the supply voltage and the drain of the first n-type transistor; a second resistor coupled between the supply voltage and drain of the second n-type transistor; a first source follower having an input coupled to the first node and having an output defining a first output of the stage; a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.