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Patent Searching and Data


Title:
COMPARATOR WITH VERY FAST REGENERATION TIME CONSTANT
Document Type and Number:
WIPO Patent Application WO2003017485
Kind Code:
A3
Abstract:
A comparator comprises a cross-coupled regenerative latch, a circuit connected to thecross-coupled regenerative latch and a clocking circuit. The cross-coupled regenerative latch regenerates, during a latching mode, a signal which is indicative of a difference between two input signals. The circuit connected to the cross-coupled regenerative latch operates as a voltage follower during an acquisition mode and as a cascode amplifier stage during the latching mode. The clocking circuit switches the comparator from the acquisition mode to the latching mode and vice versa. The comparator eleminates the extraneous loading from the positive feedback when the regeneration takes place, so that a very fast regeneration time constant is obtained.

Inventors:
COSAND ALBERT E (US)
Application Number:
US0225907W
Publication Date:
October 16, 2003
Filing Date:
August 13, 2002
Export Citation:
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Assignee:
HRL LABORATORIES, LLC
COSAND, ALBERT, E.
International Classes:
H03K3/2885; H03K3/356; H03K17/041; H03K17/0416; (IPC1-7): H03K3/2885; H03K3/356
Foreign References:
EP0448834A11991-10-02
US4607172A1986-08-19
US5068550A1991-11-26
Other References:
PATENT ABSTRACTS OF JAPAN vol. 009, no. 208 (E - 338) 24 August 1985 (1985-08-24)
PATENT ABSTRACTS OF JAPAN vol. 009, no. 010 (E - 290) 17 January 1985 (1985-01-17)
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