Garbage in / garbage out: Input filters enhance A/D converter measurements News & Analysis 11/27/2002 Post a comment Analog-to-Digital Converters (A/D converters) are capable of quite impressive noise and distortion performance. However, even the best signal generators and synthesizers produce signals that are not spectrally pure enough to evaluate noise and distortion performance of A/D converters. A National apps guy reminds us that even the best test set ups can benefit from an input filter.
Differential Hall-effect sensors aid rotational speed control News & Analysis 11/27/2002 Post a comment The rotational speed of motors with gear teeth can be precisely monitored and controlled with new-generation Hall-effect sensors. BiCMOS technology provides devices with high-sensitivity and speed, and yet small enough to fit inside motor housings or other tight spaces. Allegro's ace applications engineer explains their principles of operation, and provides a guideline for analog signal conditioning.
Diving into the 802.11i Spec: A Tutorial News & Analysis 11/26/2002 Post a comment The 802.11i specification will play a big role in improving the overall security capabilities of current and future WLAN networks. Here's a look at the key technical ingredients of this draft specification.
COT: post design considerations News & Analysis 11/25/2002 Post a comment The proliferation of libraries and intellectual property (IP) in the customer-owned tooling (COT) world has lowered the barrier of entry for those interested in moving to a COT design flow.
Microcontrollers/Microprocessors Out in Force at Embedded Systems News & Analysis 11/15/2002 Post a comment The East and West Coast Embedded Systems Conferences are always great shows for learning about the latest and greatest embedded software and hardware products. TechOnLine's Jim Lipman discusses some of the more interesting recently announced microprocessor, microcontroller, and silicon cores, several which will be featured at the upcoming show.