Signal cleaning circuit

Abstract

A signal cleaning circuit used to eliminate the glitch, noise and rising / falling edge jitter in a circuit adopts the following basic structure: the signal cleaning circuit consists of an AND logic implementation unit and time delay processing units; through adopting the serial time delay processing units and a cascaded basic structure and improving or adding a crossconnected parallel structure, a novel perfect improved signal cleaning circuit is formed; through adopting the connection mode of cleaning circuit module-reverse direction-cleaning circuit module-reverse direction, the forward jump glitch superposed on a low level and the negativegoing jump glitch superposed on an up level can be eliminated at the same time. The circuit, which can be realized by a discrete component or an integrated circuit, can effectively eliminate the glitch, noise and rising / falling edge jitter in a circuit; therefore, the circuit can effectively prevent circuit logic disorder caused by various interferences and ensures normal operation of the circuit. Moreover, the circuit is simple and reliable and has strong practicality.

Description

technical field [0001] The invention relates to a signal cleaning circuit whose function is to remove various interference signals, including burrs, noises and rising / falling edge jitters, in circuits, especially digital circuits. Background technique [0002] In digital circuits and analog circuits, glitches, noise and edge jitter caused by the environment or the circuit itself are a headache, especially in the field of sub-micron technology in the development of integrated circuits in digital circuits. It is more and more prominent. In some circuits that are very sensitive to signals, such as asynchronous circuits, because they are not controlled by the clock, the glitches, noise and edge jitter that enter the circuit as input noise will cause confusion in the reading of the logic, making the data Transmission errors occur, which interfere with the correctness and stability of the output signal. In particular, the set signal that realizes the set function and the reset si...

AI Technical Summary

Problems solved by technology

This approach can design different circuits according to actual needs. The quality of the design directly affects the removal effect of burrs, noise and edge jitter, so it is greatly affected by human factors; at the same time, this approach is aimed at different circuits. Different designs are required, which takes up a lot of time and resources, and prolongs the product development cycle

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