TND301

TND301 Clock Management Design Using Low Skew and Low Jitter Devices Prepared by: Paul Hunt ON Semiconductor http://onsemi.com TECHNICAL NOTE Why Do We Need Clock Management? Can you imagine the chaos in our world if our clocks or watches were not synchronized to Greenwich Mean Time? How would trains, buses, and airplanes run on schedule? The miniseries Longitude was the story of a man who made a major technological breakthrough by inventing an accurate clock that could be carried on sailing ships so navigators could accurately calculate longitude and know where the ship was located at any moment in time. Before this, ships ran aground and many people lost their lives due to navigational errors. Even though there are fixed time zone differences throughout the world, all clocks must agree within fractions of seconds for civilization to work orderly and without confusion. Clock accuracy is one of the most important scientific technologies in our world today. www.DataSheet4U.com ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Ì ÌÌ ÌÌÌ ÌÌ Ì Ì ÌÌÌ Ì Ì ÌÌ Ì ÌÌÌ Ì ÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌÌ ÌÌ Ì ÌÌ ÌÌÌÌÌÌ ÌÌÌÌ Ì Ì Ì ÌÌ ÌÌ Ì Ì Ì Ì ÌÌ ÌÌ Ì Ì Ì Ì ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÌÌÌ ÌÌÌ ÌÌ ÌÌÌ ÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌÌ ÌÌ ÌÌÌÌÌÌ ÌÌ Ì Ì ÌÌ ÌÌÌÌÌ Ì Ì ÌÌÌ ÌÌ Ì ÌÌ Ì ÌÌ ÌÌ Ì Ì ÌÌ ÌÌÌ ÌÌ ÌÌÌÌÌ ÌÌ ÌÌÌÌ ÌÌ Ì Ì ÌÌ Ì ÌÌÌÌ ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÌÌÌ ÌÌ ÌÌÌ ÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌ Ì Ì Ì ÌÌ ÌÌ Ì Ì Ì ÌÌÌ ÌÌ ÌÌ ÌÌ Ì Ì ÌÌ Ì Ì Ì ÌÌ ÌÌÌÌÌ ÌÌ Ì ÌÌ Ì ÌÌÌÌÌ ÌÌÌÌ ÌÌ ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌ ÌÌÌ ÌÌ Ì Ì ...