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Recent content by emilian6

  1. E

    Layout fill with dummy decoupling caps (poly1, M1, ...) for noise reduction and EMC

    Hi, there is an idea to improve EMC by layout fill with dummy decoupling caps (poly1, M1, ...). There is a patent describing the idea: Optimized decoupling capacitor using lithographic dummy filler Do you know a free or payed tool that could do layout filling automatically? Thanks in advance!
  2. E

    What is the different of these resistors?

    silicided poly resistor Your answer is here:
  3. E

    Information about +/- 6 sigma process

    Re: Sigma process An interesting book on Six Sigma applied to design and manufacturing of electronic equipment including PCBs.
  4. E

    how to calculate switch size in chopper OTA op-amp

    I have OTA op-amps in delta sigma modulator. Now I'd like to add chopper to op-amps. How can I calculate the size of the chopper switches. They are in the straight chain of the op-amps and I think they shouldn't change the settling time. So, may I take minimum sized switches?
  5. E

    How to reduce mistach in CMOS analog IC design?

    Yes, "The Art of Analog Layout" is really good for understanding the basics of matching. Here is the link:
  6. E

    folded cascode op amp high swing

    Re: folded cascode op amp Thank you Edajason, but what about extra biasing with matching (insensitive to threshold voltage, mobility variations and eventually temperature)? Any literature or links ?
  7. E

    Schematic entry tool for latex

    schematic tool scan For now, I don't know any other soft besides Corel Draw. If anybody knows, please write it.
  8. E

    extra bias circuit for OTA

    Pls, give me an example of extra bias circuit for OTA or give me some useful links or literature. I mean cascode biasing with matching (insensitive to threshold voltage, mobility variations and eventually temperature). What is the way to calculate the biasing circuit? Thank you.
  9. E

    folded cascode op amp high swing

    Re: folded cascode op amp Pls, give me an example of extra bias circuit for this OpAmp or give me some useful links or literature. I mean cascode biasing with matching (insensitive to threshold voltage, mobility variations and eventually temperature). What is the methodology for bias setting in...
  10. E

    Analog IC Design Prospective

    Of course, Nature is Analog, Digital is Artificial. Mix them is our world. If one is missing, the world is missing :-)
  11. E

    how to learn rf ic design

    You can look at this webpage: **broken link removed** It was very useful for me. Success!
  12. E

    IC designer or firmware engineer?

    In Bulgaria, the salary for an engineer is about 500-1000US $/ mounth in the capital and two times less in the other "big" cities with famous Technical Universities. The taxes now are the lowest in the region of East Europe and I think it's a big deal to invest in the IC design domain. I think...
  13. E

    How to get a low-pass filters cutoff frequency?

    Re: Low-pass filter Look at the attached lecture from the famous Sinencio - "Rail-to-rail OpAmp". You can get idea how to calculate the compensation.
  14. E

    Considerations for audio codec design with sigma delta ADC

    Re: Audio sigma delta ADC You can look at this guide: **broken link removed**
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