Current steering topologies guide D/A converter design News & Analysis 9/18/2002 Post a comment Digital to analog converters form the heart of many communications and mixed-signal circuits. From the August issue of Planet Analog magazine, an AMI engineer shows how current-steering trees can weigh bits accurately, while minimizing crosstalk and silicon area.
Know where your data goes before you make USB go fast News & Analysis 9/18/2002 Post a comment USB has taken the computer peripheral world by storm. In a few short years, it has risen to be the dominant personal computer peripheral interface in almost every category, including printers, scanners, digital cameras, mice and keyboards. It is a "must have" interface for almost any peripheral. You want to add it to your design, so you pick the new 480 Mbits/s speed, right? Wrong, say Cypress engineers. Similar to any other engineering decision, there are tradeoffs involved. This article looks
Current limiting key to hot-swap circuit protection News & Analysis 9/18/2002 Post a comment Many approaches are available for protecting a system against electrostatic discharge (ESD), surge current, overcurrent, undervoltage, overvoltage, and other problems. Each accomplishes a specific set of tasks. Some protection circuits are associated with a particular industry or company, and others are linked to a specific standard such as UL, USB, IEEE, CSA, or IEC. This piece - a preview from the September 23rd PA magazine -looks at live insertion issues.
Heading out onto the fiber Design How-To 9/4/2002 Post a comment Optical communications quenches the industry's thirst for ever greater bandwidths, but placing information onto fiber is not without its challenges. This paper, originally published in a sister publication (Microwave Engineering) looks at some of the modeling issues associated with components and signal conditioning stages required for Electro-Optic Transmission.
Understanding gain-and-load dependencies the key to successful rail-to-rail op amp use News & Analysis 9/4/2002 Post a comment Single-supply op amps with rail-to-rail operation are designed to support new-generation battery-powered portables. But their behavior can be quite different from that of conventional operational amplifiers with dual 15V rails. Read the data sheet performance curves carefully: They depict gain and load limitations, explains this Texas Instruments/Burr-Brown products veteran.
Drones are, in essence, flying autonomous vehicles. Pros & cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight, as are piloted airplanes? Is the technology advancing faster than we can answer the questions it poses?
Panelists: Chad Sweet, Director of Engineering, Qualcomm; Yannick Levy, VP Corporate Business Development, Parrot; Jim Williams, ex-FAA drone chief; Michael Drobac, Exec. Director, Small UAV Coalition; Moderator: Junko Yoshida, Chief Int'l Correspondent, EE Times