Comparator circuit

Details Comparator circuit Comparator circuit

2006-11-14

2006-11-14

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S063000, C327S050000

Reexamination Certificate

active

07135893

ABSTRACT:
A comparator circuit that operates over a wide range of input voltage from Vss to Vdd is offered. This comparator circuit includes a first comparator receiving a pair of differential input signals from input terminals, a second comparator to which a pair of differential outputs of the first comparator is inputted, a current source that provides the pair of differential outputs of the first comparator with a very low current that flows to a ground and a third comparator that receives the pair of differential input signals from the input terminals. A differential output of the second comparator and a differential output of the third comparator are combined to make an output signal. The output signal is received by to an inverter. The first comparator is a P-type comparator while the second and the third comparators are N-type comparators.

REFERENCES:
patent: 5600275 (1997-02-01), Garavan
patent: 5864587 (1999-01-01), Hunt
patent: 6366137 (2002-04-01), Garnier
patent: 63-082120 (1988-04-01), None
patent: 06-090125 (1994-03-01), None
patent: 2002-149626 (2002-05-01), None

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