Ring oscillator and method of measuring gate delay time in this ring oscillator
US6154099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Oct 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/0315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A ring oscillator is formed by connecting three or more odd gate circuits in a ring. Each gate circuit includes a precharge dynamic gate. An output signal from the precharge dynamic gate of one gate circuit is used to precharge the precharge dynamic gates of all the remaining gate circuits. In measuring the gate delay time of the ring oscillator formed by connecting, in a ring, three or more odd gate circuits each including a precharge dynamic gate, the oscillation frequency of the ring oscillator is measured, and the reciprocal of the oscillation frequency is divided by the number of gate circuits constituting the ring oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.