Buffer stage for use with a current controlled oscillator
US5512861A · kind A · utility
18Cited by
7References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/0315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A ring oscillator buffer stage, supplied by an adjustable current source of an asymmetrical current controlled ring oscillator, is provided for amplifying the output of the ring oscillator. The frequency of the ring oscillator varies as a function of a control signal. The buffer stage includes; a plurality of current controlled buffers, supplied by currents which are controlled in correspondence with the control signal, for amplifying the output of the oscillator; and a buffer for amplifying the output of the current controlled buffers for providing a full-swing output signal with a duty cycle of approximately 50%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.