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Recent content by skoda

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    Monte Carlo - circuit exlusion

    Please, anybody has some experience with ADEXL DUT? I think I find the way how to use it, but my simulation result isn't clear. So far I find some note ( http://wikis.ece.iastate.edu/vlsi/index.php/MonteCarlo_Simulations_using_ADE_XL ), where is said that you can set DUT only in Mismatch case...
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    Monte Carlo - circuit exlusion

    thanks guys, in ADELXL you can click on SPECIFY DUT, this is what you mean haykding ? I try it few times, but I dont know how to exactly use it correct. My last opinion is that you need a symbol of circuit you want to test and find him in this menu.
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    Monte Carlo - circuit exlusion

    I have some idea, what if I make a new library "XZ_MC" and into this library a copy standart device nmos/pmos/res etc... If I change In ADEL Model Library setup from stat to nn monte carlo should take them into simulation, is it right? Anyway I don't know how I can attach new library to this...
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    Monte Carlo - circuit exlusion

    Hi to all IC designers and engeneers ! Does anybody try to do monte carlo simulation to only a part of cicuit? For example in simple ota, how to make Monte Carlo only on diff.pair?
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    [SOLVED] Monte Carlo - no results

    Hi gag2000, thanks! I need to set stat model lib. instead of SS,FF etc... Everyting is fine now. :]
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    [SOLVED] Monte Carlo - no results

    Hi, I do Monte Carlo analysis to my Bandgap project, in this simulation I'm interreste in Opamp parametetrs Dc Gain,PM etc.... But as you can see on picture I have 100run but no sigmas no results no distribution. It looks like Monte Carlo doesnt change any parameter and do 100times same...
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    Current Summation circuit

    Well it should be a start up :D :D Let me explain it :] So Vref and Vrefs are voltage of output branch of bangap reference, so if Opamp work and everything is fine vrefs is about 600mV, which is enough to switch (left) NMOS_2SERIAL. If there is a problem and output voltage of bandgap reference...
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    Current Summation circuit

    thank you guys, for advise. Erikl you have same idea like me :] but there is a problem that diode connected nmos takes voltage about 0.6V so maybe diode will be close or P_BGR goes to triode. maybe can I ask for something else? I make some simple structure that serve like a start-up. I wonder...
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    Current Summation circuit

    Hi guys, Im try to make some easy structure that can sum current, for example black box which recognize if it sink 200nA or 280nA. On the picture you can see that I make Branch replica of Bandgap ref, and I need something what can sense current through diode Q3 ( that is the 80nA). Can...
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    P_DIODE design issue

    Thanks guys, now is designing a little bit easier :D Well I have one question about serial transistor, I make a symbol for that as you can see on picture OTA and his Tail-Bias transistor is two serial in Symbol, problem is that I lose some overview, I dont see voltage current, sure I can look...
  11. S

    P_DIODE design issue

    So every mosfet use { like a diffpair, cascode, common source ...} could be designed in Wi/Mo/Strong inversion? there will be some tradeoff, okay speed, headroom noise but it will still work as cascode or common source , right?
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    [SOLVED] ocean script : device list

    Hi guys, I have solved my problem. I just modify script to be more universal. First I manualy write device list and change netlist directory and then in script I use foreach cycle. Much better than manualy rewrite all array and variable in every project. Thanks guys and have a nice day
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    P_DIODE design issue

    Hi Erikl, my mentor told my exactly the same, why do you think that P_DIOD should be in strong inv? Well I actually dont know maybe I read some paper and make some bad conclusion. Anyway is here any rules/papers or some information in which region should be DIODE,DIFFPAIR,BIAS,CASCODE...
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    P_DIODE design issue

    Hi, guys I have problem with P_DIOD design, as you can see to set this device to strong inversion ( gmoverid near to 10) I choose W/L= 1/12, problem is that this p_diod have large vds=720mV a therefore less voltage left fo DIFF_PAIR which is going to triode and Gain of this OTA is going to...
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    [SOLVED] ocean script : device list

    Hi BrunoARG, actually I try to make a program which find every Mosfet in circuit and write id,gm,gds,vds,vdsat and so one. I have many test circuit and I dont want rewrite script because some transistor has a different name.
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