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High Performance Clock Signal Generator

IP.com Disclosure Number: IPCOM000061467D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
DeFazio, JJ [+details]

Abstract

This article describes a clock signal generator (also known as a "clock-chopper") circuit that generates an output pulse whose width is greater than one-half of the oscillator input cycle time (a 50% duty- cycle oscillator), while also being able to control the pulse to its off-state during system testing. Pulse generation is very critical in high speed digital systems. A reduction in statistical pulse-width variation, for example, allows for a reduction in system path lengths with a corresponding improvement in system performance. Fig. 1 illustrates a method for generating a pulse that is greater in width than one half of the input cycle time. A 50% duty cycle pulse is typically used as an input source.