Comparator systems and methods

Details Comparator systems and methods Comparator systems and methods

2006-02-24

2008-11-04

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S052000, C327S072000

Reexamination Certificate

active

07446573

ABSTRACT:
In accordance with an embodiment of the present invention, a comparator system includes a plurality of multiplexers adapted to multiplex a number of differential input signals and a number of differential reference signals. A differencing circuit receives a differential input signal and a differential reference signal from the multiplexers and provides a differential output signal, which is used to provide a differential comparator output signal. A latch may be provided to perform differential-to-single ended conversion on the differential comparator output signal to provide a latch output signal. An output circuit may provide a registered digital output signal based on the latch output signal.

REFERENCES:
patent: 7271623 (2007-09-01), Palmer
Behzad Razavi and Bruce A. Wooley, Design Techniques for High-Speed, High-Resolution Comparators, IEEE Journal of Solid-State Circuits, vol. 27, No. 12, Dec. 1992, 11 pages.
Tanchu Shih, Lawrence Der, Stephen H. Lewis, and Paul J. Hurst, A Fully Differential Comparator Using a Switched-Capacitor Differencing Circuit with Common-Mode Rejection, IEEE Journal of Solid-State Circuits, vol. 32, No. 2, Feb. 1997, 4 pages.

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