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Content posted in August 2001
Phase- and Delay-Locked Loop Clock Control in Digital Systems
8/17/2001   Post a comment
High-speed chips require low-skew clock distribution that can handle high clock rates and sophisticated features such as programmable duty cycle and delay. Zeljko Zilic of McGill University discusses frequency synthesis along with the critical phase- and delay-locked loop (PLL and DLL) circuit designs needed to meet chip-speed criteria.
Analog Circuit Design Using Genetic Algorithms
8/13/2001   1 comment
Genetic algorithms (GAs) offer some impressive advantages for analog-circuit optimization. Kenneth Noren and John Ross discuss how to apply such algorithms for adjusting circuit parameters and describe a number of circuits designed with GAs.
Cracking the Analog-Design Nut
8/8/2001   Post a comment
SoC designers face a difficult problem in incorporating analog and mixed-signal blocks into their mostly digital chips. However, new breeds of synthesis and physical-implementation EDA tools are helping these designers in Cracking the Analog-Design Nut.
Designing Operational Amplifier Oscillator Circuits for Precision Resistive and Capacitive Sensor Applications
8/3/2001   Post a comment
The design of RC operational amplifier oscillators requires the use of a formal design procedure. ON Semiconductor's Jim Lepkowski describes a design procedure for two-state variable oscillator circuits you can use in precision capacitive-sensor applications.

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There’s a further cool thing you can do with a spreadsheet that most SPICEs can’t. That’s to use the spreadsheet ‘solver’ functionality to adjust component values in the search for a better-fitting circuit – or even to find a set of component values for a circuit you can’t otherwise design.
Infineon MOSFETs have been embedded into PC boards by Schweizer Electronic AG
You now need to adjust component values to achieve some system goal, such as predefined frequency response or time behaviour, and there’s no closed method for working out those values.
As a member of the electronics design community, I am angry and disappointed with the recent deaths of 346 people due to the Boeing MAX 8 design
The theoretical advantages of GaN-based power transistors are now being realized in mainstream system designs. Power supplies for data centers and telecom switching racks are two application areas where GaN transistors show significant improvement in comparison to systems using best-in-class Silicon-based Superjunction devices.
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