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Recent content by chintalaudaykumar

  1. C

    Timing Optimization commands in Magma

    Yes, You can use these optimization commands post-CTS also. In that case you can use the options like dont_move_reg for some of the commands, which optimizes only combo logic with out moving the flops. Uday
  2. C

    Timing Optimization commands in Magma

    Hi, Fix cell is a set of commands, which does global placement and timing optimizations. You can run fix opt global for timing optimization after fix cell and also individual commands like run gate speed $m $l , run optimize size $m likewise...but first of all you have to analyze the...
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    What is Illegal Cell Locations in Magma

    Hi, What kind of cell is that?Is it a macro or standard cell?? Uday
  4. C

    technology node.......

    Hi, Can anyone tell me how do they arrive at the technology node.....like after 180nm, its 130nm and after 90nm.........and so on......... thanks in advance..... uday
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    why negative hold time?

    negative hold time hi, In .lib files of the TSMC the hold time is in negative, what is the reason? what does it mean? thanks in advance,
  6. C

    Why we don't use power domains for IO?

    Hi, we use power domains for core why not for IO ? Thanks uday
  7. C

    CMOS down conversion mixer

    Hii, I'm getting 1dB compression point as .5dBm,I have given the 2 tones power as -30dBm,still the 1st and 3rd order are intersecting,but in the case of IIP2 the first and second order are not intersecting.......what can be the problem? thanks in advance.......
  8. C

    plotting graphs in cadence

    hii, How to plot LO feed through at RF port and IF port for a mixer in cadence? Thanks.....
  9. C

    plotting graphs in cadence

    Hiii, How to plot the conversion gain and noise figure as a function of LO square wave amplitude in specter? thanks in advance.....
  10. C

    CMOS down conversion mixer

    Hii, What my question is theoritically 1st and 3rd curves should not intersect but in my case they are.Will it be still fine?or is there any wrong with my design?I have taken the extrapolation point as -15dBm. Thanks in advance......
  11. C

    CMOS down conversion mixer

    Hii, I have given my second tone as 2.401G in PAC analysis in spectre.Then IF will be at 101MHz and 3rd order will be at 99MHz.I have sweeped prf from -30 to 10 then both curves are meeting at around 3dBm.The 1st order is linear upto .5dBm and third order is linear till 5dBm prf then it is...
  12. C

    plotting performance parameters of mixer vs temp in cadence

    Hi, How to plot the conversion gain,noise figure and others with temperature variations in spectre.......please help me..... Thanks in advance......
  13. C

    CMOS down conversion mixer

    Hi, I have designed a folded cascode mixer at 2.4GHz RF and LO is at 2.3GHz,I'm getting 1 dB compression point as 0.56dBm,for calculating IIP3 I have given two tones as 2.401G and 2.4G , while plotting the curves, both the fundamental and third order components are intersecting what could be...
  14. C

    CMOS down conversion mixer

    Hii, The mixer I designed has 1dB compression point .36dBm.RF frequency is 2.4GHz. For calculating IIP3 I have used second tone as 2.401G in addition to 2.4GHz RF signal.Is it right? While plotting IIP3 in cadence what should I take as the extrapolation point,because when I change that...
  15. C

    CMOS down conversion mixer

    Hii, In my mixer circuit in the LO ,I have used a pulse source and its peak amplitude is 250mV and source resistance is 100 ohm...so how to claculate the LO power in dBm?and what is maximum LO amplitude that can be used in mixers? Thanks....... Uday
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