Dr. Howard Johnson last public seminar

Recent Newsletter

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.

read more

Dr. Johnson headshot

Help for Your Design

Our archives contain hundreds of detailed, comprehensive answers to complex questions, plus archives of editorial articles written for EDN magazine and other publications. Keyword indexed... read more | straight to the index

Consulting

Dr. Johnson offers world-class advice, drawing on 30 years of design experience, an extensive network of industry contacts, and a unique perspective made possible by his interactions with over 1000 digital engineers annually... read more | bio

Books & Films

Clips from film: Xilinx Rocket IO

Preview excerpts from the film Mixed-Signal Isolation.

Media Player File: 5.6MB, .wmv format, runtime 3 min. File is highly compressed, actual movie plays in full DVD quality.

Black Magic Book | DVD Films | Consulting