Low pass filter de-glitch circuit

Details Low pass filter de-glitch circuit Low pass filter de-glitch circuit

2007-05-29

2007-05-29

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S198000, C327S379000

Reexamination Certificate

active

10973386

ABSTRACT:
A low pass filter de-glitch circuit is disclosed herein, it includes a first short pulse resetting circuit, a second short pulse resetting circuit having MOS transistors and a low pass filtering circuit having a capacitor coupled with an inverter. Forgoing circuits are cascode together and then connected to a buffer. The buffer provides two complementary signals which are served as control signals feedbacked to the first short pulse resetting circuit and the second short pulse resetting circuit. Utilizing the driving large current capability the MOS transistors have, the low pass filter de-glitch circuit can reset the capacitor rapidly. Therefore the circuit can filter those glitch signals.

REFERENCES:
patent: 5479132 (1995-12-01), Verhaeghe et al.
patent: 5703416 (1997-12-01), Hinkle et al.
patent: 5990753 (1999-11-01), Danstrom et al.

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