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28 déc. 2011 · You need a high speed op amp with some current output capability (at least 100 mA). You also need to protect the varactor from inadvertent burn-out if forward biased. So there are two basic circuits: The single ended rail-to-rail op amp can not blow out the diode with a forward bias, so you can hook it up directly. The dual supply op amp needs ...
15 févr. 2004 · If you can post your source and dsn file we'll have a look. Typically this happens when you externally wire a crystal etc. - this introduces an extremely high speed oscillator which bottlenecks the simulation and is completely superfluous anyway. Clock frequency is specified as a property of the microcontroller device.
12 juin 2004 · hspice speed up simulation Besides fast options, autostop can help you as well. In addition, increase step for transient, AC,DC will help when too small is not necessary. Of course employing multi-cpu and use multi-thread job can make simulation fast dramatically.
31 janv. 2024 · You need to apply voltage gain so that dV/dt out is over 5 times the 'leading edge' of the STM32. drive signal. A fast NPN transistor, with R//C emitter load, possibly in cascode with a higher voltage. drive transistor, can give you a fast output fall-time, and Baker-clamping the base to collector can get you.
3 nov. 2018 · 300,207. The two last lines are completely wrong, time = distance/speed. Propagation speed is light speed/sqrt (Er,eff). Your assumed 0.15 m/ns (0.5 light speed) is roughly correct for embedded microstrip on FR4, microstrip has typically higher speed (Er,eff < 4), stripline lower speed (Er,eff > 4). You can use Saturn Toolkit, tab Conductor ...
21 mars 2008 · Hi all, I am using 90nm technology. After I use PLS and create the config view to do the simulation. In the AE, it is no problem that the ti run fast enough for just a few cells. After I want simulate the whole circuit, it because very small. In my circuit, there are 8 DFFs, 8 XOR and 16 Buffer...
vantis high speed board design techniques HighSpeedBoardDesign. Welcome to EDAboard.com Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot
11 févr. 2006 · 27. Trophy points. 1,308. Activity points. 2,986. Re: speeding ADS Just go to the task manager and in processes tab pick proper and give to it max priority, also do not tale a lot of points to run But of course you can do it with other 3D simulators and for sure they will be more faster (like HFSS, CST etc.) David. R.
8 août 2008 · This sounds as though you want to examine 5 seconds operation of a circuit running at 1 GHz. It's an example of mixing micro and macro events. It becomes mismatched and unwieldy in simulation. (It is not a problem with real electronics, of course.) Consider trying a longer timestep. Also try a slower switching rate in your simulated circuit.
17 août 2010 · Again, as FvM said - change some values to speed it up & extrapolate the real results. You cannot make the maximum time step very long if something happens occasionally but with high speed. At best the results will be innacurate, at worst it could miss the event completely. Pspice doesn't compensate for aliasing. It will vary the timestep based ...
