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Recent content by southpaw

  1. S

    Comparator circuit at charge pump output

    Output of my charge pump is between 8.2V and 9.8V. I have 16 such charge pump outputs. How do I design a comparator circuit that will give me a digital output on whether the charge pump output is between 8.2V and 9.8V or not. 1 if between the limit and 0 if not within the limit. Thanks in...
  2. S

    Equivalent for XTR110 from Texas Instruments

    xtr110 alternative What package were you looking at? they are available in 3 different varieties...I think the SOIC's and PDIPs are cheaper..
  3. S

    4-20mA transmitter circuit to replace discontinued XTR115

    4 20ma transmitters Hey guys, Can you tell me a little bit more about the XTR110/Xtr115 applications that you are using it for? Regards, Southpaw
  4. S

    RC circuits,the fundamentals

    ya its protected....do u hav the password??
  5. S

    RC circuits,the fundamentals

    www.ecgf.uakron.edu/durkin/circuits1.htm Hello all, Could someone suggest some resources(books,videos or web pages) to clearly understand the RC circuits, how charging and discharging occur and transient analysis of RC and RLC circuits.I feel the importance of these concepts as everything else...
  6. S

    Can I start instruction in the line beginning in Codewarrior

    codewarrior doubt In the assembler editor,can i start an instruction in the beginning of the line without using a tab.Why?or why not?
  7. S

    brushing up on the fundamentals

    Hello all, I am graduate student and and I will be graduating this May.I have a couple of interviews lined up for Test/Product engineer positions and most of them have told me to be prepared for basic circuit analysis questions to amplifier design.Can a couple of test/pdt/design engineers in...
  8. S

    Folded cascode op amp with AB output stage

    folded cascode op amp with class ab output stage i would assume the following sizing considerations: sizing i/p pair depending on how much current you want...and gm..coz gm depends on i/p pair.. cascode transistors...need to have matching vgs's so large w/l.....trade off is noise...
  9. S

    Folded cascode op amp with AB output stage

    folded cascode matching Which are the really critical transistors in the folded cascode with class ab output stage in terms of matching....... THanks southpaw
  10. S

    1/f noise in diff amp

    inversely proportional to area
  11. S

    Analog device new blackfin DSP demo board for $99 until...

    demoboard compass Hello all, Just wanted to know if anyone had resources on devices drivers for Blackfin.Id like to apply for an internship at Analog devices,all advice and suggestions are most welcome. EDAboard.com ROCKS!! Southpaw.
  12. S

    What are the blackfin processors?

    Re: Blackfin Processors Hello all, Does anyone have any info on Blackfin device drivers and testing & debugging these drivers.I already have the info that is available on analog devices website. Thanks Southpaw
  13. S

    How much current should pass through the rail and cascode in a folded cascode?

    Re: folded cascode query i think this is a basic question regarding Vds and VDsat.....suppose I have a 2.7 V supply...and i need a 2v p-p swing at the output....at the output i have a rail pmos,cascode pmos,rail nmos and cascode nmos.....i knw tht vds shud be greater than vdsat for all...
  14. S

    How much current should pass through the rail and cascode in a folded cascode?

    Re: folded cascode query as of now...i still havent figured out an efficient way to size transistors....do i need to charactarize each nmos and pmos separately(i.e keep a fixed gate and drain voltage and calculate w/l for the current i need) and then later put them all together into a...
  15. S

    How much current should pass through the rail and cascode in a folded cascode?

    Re: folded cascode query Thanks aryajur and suhas_shiv.... aryajur,I didnt get your point about choosing the i/p transistor sizes based on the driving impedance of the source....all i need to maintain is a min gm of 25uS right? southpaw Added after 4 minutes: moreover...i need 60 degree...
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