gm over id (gm/id) method part 2 MOSFET Characterization

Поделиться
HTML-код
  • Опубликовано: 3 янв 2025

Комментарии •

  • @anrabal3969
    @anrabal3969 6 лет назад +4

    Thank you very much Hafeez for this great tutorial about how to use gm/Id technique. Really Helpful.
    A simple suggestion: you can use VAR("name") in output expressions to use design variables. This way you don´t have to add a DC voltage to operate with MOS width.

  • @mangeshmalgi279
    @mangeshmalgi279 4 года назад

    Thank you very much. You have explained the procedure very clearly. Thanks a lot.

  • @ntdglobal2510
    @ntdglobal2510 Год назад

    FYI VAR("W") can be used in ID/W equation

  • @franciscolauzurique6857
    @franciscolauzurique6857 4 года назад +1

    Thank you very much for this video sir, it helped a lot!!!

  • @Rohit-bx2vi
    @Rohit-bx2vi 7 лет назад

    thanx a lot.... tutorials are very helpful. Their is little problem with sound quality if possible please make it bit clear in next tutorials..

  • @adityasoni4469
    @adityasoni4469 3 месяца назад

    I have some doubts related to analysis . Firstly in the formula of fT its Cgs and not Cgg but here we have taken Cgg
    Secondly , I performed the exact same steps as in the video but still my max fT was around 40GHz but in this video its around 25-26GHz

  • @pallavisingh9973
    @pallavisingh9973 9 месяцев назад

    sir please .......also make some videos on LDO

  • @dee311086
    @dee311086 7 лет назад

    Instead of plotting "w" as a voltage you can export the id curve to the calculator and there you can divide it with the value of "w". Then you plot this expression. after plotting, select the waveform and right click -> export to ADE L. an expression will add to ADE L . Or you can add an expression in ADE L directly e.g., (id / 4e-06)

    • @priyadarsheesinha6176
      @priyadarsheesinha6176 7 лет назад

      The step suggested by you will help if value of width you have kept constant, also u need to update the expression each time you update the width... Hafeez's technique is a generic one..

  • @pyroBlastM
    @pyroBlastM 8 лет назад +1

    Dear Hafeez, thanks for this. I would like to ask you a question. You use the same circuit testbench to plot all the curves. I have seen somewhere some people, when it comes to plot the gm/gds, they maintain the vgs fixed at a certain voltage above Vth and they vary Vds. Why you don't do like that?
    Regards.

    • @hafeezkt1
      @hafeezkt1 8 лет назад +1

      vds has less effect on gm/id when compared to vgs. For characterisation use vgs

    • @pyroBlastM
      @pyroBlastM 8 лет назад

      Ok. Will do that and see the differences. Regards and keep the good work. I like the way you do your tutorial and videos.

  • @aswincvenu3958
    @aswincvenu3958 Год назад

    I see you have kept VDS as a constant for plotting all these graphs. May I ask, how will varying the vds affect the gm/d characteristics? What if I plot the gm/id for a vds of 1.8Volts?
    In a circuit different transistors have different vds right?

  • @shashwatssanghavi
    @shashwatssanghavi 3 года назад +1

    Hi, Thank you for sharing. Just for info :).The command "save M0:all" did not work for cadence version 2020. I used "save *:oppoint sigtype=dev
    " instead for the save_op.scs script. Furthermore, the wavex and wavey are not recognised by ocean script compiler. It requires another workaround. We can perform YvsY directly in the maestro view instead of using ADE-L.

  • @arfic14
    @arfic14 2 года назад

    what is the equivalent of the scs file for synopsys hspice?

  • @theygroup
    @theygroup 6 лет назад +1

    Sir, can you please also calculate the gm using id and vgs (by taking derivative d(Id)/d(Vgs) ) and then compare it to gm simulated by cadence? I am getting different gm values for these two procedure. Thanks in advance.

  • @aminebrahimi64
    @aminebrahimi64 5 лет назад

    Thanks a lot ....... I enjoy it!

  • @deveshmonga708
    @deveshmonga708 7 лет назад

    Sir,
    What is the use of VS,IS functions in calculator?
    Are they mandatory for including formulae with Operating point/ parameters in the ADE-L
    What is the difference between OP OPT OS options in the calculator

  • @haoyingjjxu8215
    @haoyingjjxu8215 4 года назад

    I cannot get all parameter plots (From time 6.55 in the video I am not getting that)
    , instead when I click my transistor(such named M0), it show subckt_trise_=0

  • @ssalehas1939
    @ssalehas1939 8 лет назад

    Its a very nicely explained tutorial. I want to know how to calculate the overall transconductance of an OTA based circuit and Gm vs Vid(differential voltage).Please can you help me. This tutorial is of a single MOS i want to calculate Gm of the complete circuit. thanx

    • @pouram
      @pouram 7 лет назад

      Dear Hafeez, How to plot Maximum available gain vs frequency, ft vs ID/W, NF vs ID/W, fmax vs ID/W curves for a given circuit in cadence?

  • @aiswaryajoy2212
    @aiswaryajoy2212 5 лет назад

    Hi, Can you show how to do configuration of nmos and pmos in weak inversion region?

  • @Anil13154
    @Anil13154 7 лет назад

    Hi.. when I am trying to incorporae the .scs file, its not showing any characteristics. Its same like without incorpoarating.. Where as you are getting all parameter plots (From time 6.55 in the video I am not getting that)

    • @hafeezkt1
      @hafeezkt1 7 лет назад +1

      please make sure your mosfet name is same in .scs file and in schematic

    • @Anil13154
      @Anil13154 7 лет назад

      Yes it is the same... I have verified also, but I am unable to sort out the problem
      Thanks

    • @diegodeotti
      @diegodeotti 7 лет назад +1

      Try to write M0.m1 instead of M0 only...

    • @amarnathbr3420
      @amarnathbr3420 5 лет назад

      Run the simulation once again after adding the simulation file and then check

  • @aiswaryajoy2212
    @aiswaryajoy2212 4 года назад

    it shows id signal is unbounded while plotting gm/id vs id/(w/l) graph

  • @leejohannes
    @leejohannes 4 года назад +1

    ic617... save M0:all... no effect... parametric analysis to ... anyone have better solution?

    • @shashwatssanghavi
      @shashwatssanghavi 3 года назад

      used "save *:oppoint sigtype=dev
      " instead for the save_op.scs script

    • @ravuruvasudevareddy3347
      @ravuruvasudevareddy3347 Год назад

      @@shashwatssanghavi can u suggest, how to plot Id/width in explorer for FinFET...When i try to do it is throwing netl err even after declaring the width as parametric variable...

  • @vicarz1777
    @vicarz1777 4 года назад

    Could someone help me understand why it assigned a value of W = 5u

  • @priyadarsheesinha6176
    @priyadarsheesinha6176 7 лет назад

    Thanks for the detailed procedure... @hafeez KT
    But as you said during the lectures, you will be explaining the purpose of each of the plots for gm/Id technique

  • @4NM20EC03GYANAPPADALAVAI
    @4NM20EC03GYANAPPADALAVAI Год назад

    sir please upload the ocean script to plot gm and id in cadence

  • @NaaJeevitham500
    @NaaJeevitham500 5 лет назад +2

    fT=gm/(2*pi*Cgs), can we also Cgg instead of Cgs?

  • @atiqj1986
    @atiqj1986 6 лет назад

    Hi sir, please explain gm/id technique using any simple amplifier.

    • @danielsapir1613
      @danielsapir1613 6 лет назад +1

      Hi Atiq, I've followed Hafeez video series and upload an example of my own - ruclips.net/video/UUikNMADMjA/видео.html