Title:
RING OSCILLATOR WITH FREQUENCY STABILIZATION
Document Type and Number:
WIPO Patent Application WO2004008639
Kind Code:
A3
Abstract:
A current-controlled ring oscillator (300) uses a single controlled-current supply for supplying current to each inversion stage (110) of the ring oscillator (300). The controlled current is dynamically adjusted to compensate for variations in process, voltage, or temperature conditions. A relatively simple circuit (350) is used to generate the controlled current that supplies all of the inversion stages (110) over a wide range of process, voltage, and temperature variations.
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Inventors:
ILLEGEMS PAUL F
Application Number:
PCT/US2003/022188
Publication Date:
April 01, 2004
Filing Date:
July 16, 2003
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS CORP (US)
PHILIPS CORP (US)
International Classes:
H03K3/354; H03B5/04; H03K3/011; H03K3/03; H03L1/00; (IPC1-7): H03K3/03; H03B5/24; H03L7/099
Foreign References:
| US5072197A | 1991-12-10 | |||
| US6404295B1 | 2002-06-11 | |||
| US5905412A | 1999-05-18 | |||
| US5440277A | 1995-08-08 |
Other References:
See also references of EP 1523806A2
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