Comparison apparatus operated at a low voltage

Details Comparison apparatus operated at a low voltage Comparison apparatus operated at a low voltage

2005-01-25

2005-01-25

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S089000, C341S156000, C341S159000

Reexamination Certificate

active

06847234

ABSTRACT:
The present invention provide an CMOS comparator outputting one bit digital signal after comparing two analog input signals through alternately performing a track mode operation and latch mode operation decided by a clock signal having a constant period, including: a latching unit having the main/sub input terminal; a first switching transistor having the clock signal as a gate input and having one end coupled to main input terminal; a first load transistor diode-connected to the other end of the first switching transistor and a ground end; a second switching transistor having a gate receiving the clock signal as a gate input and one end coupled to the sub input terminal; and a second load transistor diode-connected to the second switching transistor and to the other end of the ground terminal.

REFERENCES:
patent: 4749955 (1988-06-01), Cook
patent: 5397936 (1995-03-01), Wang
patent: 5416484 (1995-05-01), Lofstrom
patent: 5498982 (1996-03-01), Gopinathan et al.
patent: 5563598 (1996-10-01), Hickling
patent: 6459306 (2002-10-01), Fischer et al.
patent: 6597303 (2003-07-01), Cosand
patent: 20040027265 (2004-02-01), Michalski

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