Circuit techniques minimize temperature dependence for DPPs News & Analysis 6/26/2002 Post a comment The digitally programmable potentiometer (DPP) has two temperature dependent parameters, writes this now-famous applications guru. The temperature dependence of an analog circuit using a DPP is reduced if the main temperature coefficient can be shifted from the end-to-end resistance of the pot to a more ratiometric value. Catalyst Semiconductor's Chuck Wojslaw gives details.
Motion control technology jumps into the driver's seat News & Analysis 6/26/2002 Post a comment Today's motion control technology - specifically variable speed motor control - offers a navigation path to the high performing, fuel-efficient vehicles of the future. Running a car from multiple motors (instead of a single fan belt) enables peppy acceleration, precision steering and ride control - all with greater fuel economy. Power management electronics plays a key role, says visionary Alex Lidow.
Studios pause as audiophiles embrace digital News & Analysis 6/21/2002 Post a comment The next big format for music may be just plain bits. Many audiophiles who have amassed collections of vinyl records, cassette tapes and compact disks see digital as the ultimate format-though it's not clear where users will house liner notes and album cover art.
Après DACBut Wait, There's More Design How-To 6/18/2002 Post a comment The Design Automation Conference is over, but some additional product
announcements promise exciting design advancements down the road.
TechOnLine's Jim Lipman discusses some of the ones that were of
particular interest to him.
Test techniques provide insights for noise-sensitive applications News & Analysis 6/12/2002 Post a comment If there is an analog-to-digital (A/D) converter in the signal path of your signal-condition system, there are three fundamental tools that can be used when assessing the circuit's performance. These include frequency analysis (FFTs), time analysis, and DC analysis techniques. In this tutorial, Microchip Technology's famous apps engineer, Bonnie Baker, offers some waveforms - and advisories for interpreting them.
Engineers note: Capacitors are key to voltage regulator design News & Analysis 6/12/2002 1 comment Why do LDOs hate ceramic bypass capacitors? Why do LDOs oscillate? Some 99 percent of the "design" problems associated with linear and switching regulators can be traced to the capacitors: the wrong type, the wrong value, or bad physical placement. National Semiconductor's power supply technologist, Chester Simpson offers some long overdue advisories.
Complete SoC Design, Verification Reign at DAC Exhibits Design How-To 6/7/2002 Post a comment So you're going to the Design Automation Conference and don't know where to start on the exhibit floor? Save your shoe leatherTechOnLine's Jim Lipman takes you on a DAC virtual tour of some the most interesting products in several key technology areas.