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PLL Response Time

A PLL is a tracking device. When its input changes, the PLL responds, but not instantly. The time it takes for a PLL to respond to a step change in its input is called the response time. From the response time you can derive the PLL tracking bandwidth.

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HSDD Newsletter

The High-Speed Digital Design Newsletter originally evolved as a Q & A forum for students of Dr. Johnson's seminars. Now open to everybody, read more...

High-Speed Digital Design

A Handbook of Black Magic

High-Speed Signal Propagation book coverConsidered the "bible" of high-speed design issues, this book helps engineers who work with digital systems shorten their product development cycles and fix their latest high-speed design problems. read more...

High-Speed Signal Propagation

Advanced Black Magic

High-Speed Signal Propagation book coverAn advanced-level reference text for experienced digital designers who want to press their designs to the upper limits of speed and distance. read more...