Title:
METHOD AND CIRCUIT FOR MAINTAINING A SINGLE STABLE DC OPERATING POINT
Document Type and Number:
WIPO Patent Application WO2002060059
Kind Code:
A3
Abstract:
A circuit implemented in a MOS device for operation with an internally non-linear topology, the circuit including at least first and second voltage ports, at least one voltage comparator for comparing the voltage at at least one of the voltage ports with a reference voltage, at least one of a current source or current sink for selectively sourcing current to or sinking current from the at least one of the voltage ports to maintain the voltage thereat in a voltage frame, thereby providing the circuit with a single stable dc operating point.
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Inventors:
TOUMAZOU CHRISTOFER (GB)
GEORGIOU JULIUS (CY)
GEORGIOU JULIUS (CY)
Application Number:
PCT/GB2002/000288
Publication Date:
October 03, 2002
Filing Date:
January 23, 2002
Export Citation:
Assignee:
TOUMAZ TECHNOLOGY LTD (GB)
TOUMAZOU CHRISTOFER (GB)
GEORGIOU JULIUS (CY)
TOUMAZOU CHRISTOFER (GB)
GEORGIOU JULIUS (CY)
International Classes:
H03H11/04; H03K5/007; (IPC1-7): H03H11/04; H03G11/00; H03K5/007
Foreign References:
| US6060934A | 2000-05-09 | |||
| EP0437945A1 | 1991-07-24 | |||
| US4263565A | 1981-04-21 | |||
| GB2015839A | 1979-09-12 | |||
| US5206553A | 1993-04-27 | |||
| EP0397268A1 | 1990-11-14 | |||
| US5357156A | 1994-10-18 | |||
| US5825238A | 1998-10-20 |
Other References:
RADKE R E ET AL: "A 14-BIT CURRENT-MODE SIGMADELTA DAC BASED UPON ROTATED DATA WEIGHTED AVERAGING", IEEE JOURNAL OF SOLID-STATE CIRCUITS, IEEE INC. NEW YORK, US, vol. 35, no. 8, August 2000 (2000-08-01), pages 1074 - 1084, XP000991230, ISSN: 0018-9200
FOX R M ET AL: "MULTIPLE OPERATING POINTS IN A CMOS LOG-DOMAIN FILTER", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: ANALOG AND DIGITAL SIGNAL PROCESSING, IEEE INC. NEW YORK, US, vol. 46, no. 6, June 1999 (1999-06-01), pages 705 - 710, XP000923904, ISSN: 1057-7130
FOX R M ET AL: "MULTIPLE OPERATING POINTS IN A CMOS LOG-DOMAIN FILTER", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: ANALOG AND DIGITAL SIGNAL PROCESSING, IEEE INC. NEW YORK, US, vol. 46, no. 6, June 1999 (1999-06-01), pages 705 - 710, XP000923904, ISSN: 1057-7130
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