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Recent content by qiushidaren

  1. qiushidaren

    USB 1.1 PHY Speed Control

    Hi all, I am studying USB 1.1 PHY IC USB1T11A now, but the speed control confuses me. In this circuit, the part of speed control doesn't get an op amp to control the rise and fall times, it just uses the speed control pin to open or close an NMOS connecting to an inverter by a res and a PMOS...
  2. qiushidaren

    Which Bits in Bluetooth EDR Mode Determing 2M or 3M?

    Hi all, In Bluetooth EDR mode where are the control bits which control whether the data rate is 2M or 3M? Best regards, Terry
  3. qiushidaren

    Looking for information about DTMOST

    DTMOST I am also very interested in this kind of issue. -Terry
  4. qiushidaren

    Two-Stage Open-Loop Comparator in Allen’s Book

    Hi all, Table 8.2-2 of Allen’s book <<CMOS Analog Circuit Design>> gives us a procedure to design a two-stage open-loop comparator for a linear response, in step 3, there is a equation I5=I7(2CI/CII), but I really don’t know how and from where can I derive it, your suggestions and time will be...
  5. qiushidaren

    What do SCO, eSCO and PTA mean?

    Hi all, What do SCO, eSCO and PTA mean in Bluetooth? Thank you in advance! Regards, Terry
  6. qiushidaren

    Physics of Solid state electronic devices

    Operation and Modeling of the MOS Transistor by IEEE Fellow Yannis Tsividis
  7. qiushidaren

    Regarding the Calculation of Adm

    Hi dear all, I am reading the book <<Design of Analog CMOS Integrated Circuits>> by Prof. Razavi, but I have got a question right now. In page 124, there is a formula for Adm, but when I calculated it by myself I got a different result, which is (Rd/2)[2gm1+2gm2+4gm1gm2Rss/1+(gm1+gm2)Rss]. I...
  8. qiushidaren

    Some questions about CMOS Opamps

    Hi all, I am studying the CMOS opamp now, but I am just a novice in this field so I want to ask you gurus some questions about it, your suggestions and comments will be highly appreciated! Here are my questions: What is SCR? What is junction temperature rise and drift? What does maxim storage...
  9. qiushidaren

    The difference between recursive and transversal filter

    Hi all, what's the difference between recursive filter and transversal filter, thank you in advance!:D
  10. qiushidaren

    Explain the Charge Sharing problem while sampling data from a Bus

    Re: Charge sharing Would you please explain it with an example, I am still confused about this concept, there are so many "input"s and "output"s in your explanation above.
  11. qiushidaren

    who can help me some papers thanks a lot!

    I think these books below will be helpful for you, which you can download from the E-book Upload/Download forum, and you can search the IEEE papers you need from the IEEE Papers/Study Papers forum. Title: Feedback Amplifier Principles Author: Sol Rosenstark Publisher: Collier Macmillan (May...
  12. qiushidaren

    How to force 2-stage OpAmp to find DC point for AC analysis?

    Re: OpAmp AC Anqalysis Hi, can you provide some pictures, I can't catch it very clearly, cuz I am just a newbie in the field, thank you in advance!
  13. qiushidaren

    Way to increase output resistance of the amplifier without cascodes

    Low voltage Op Amp Try gain-boosting technology by using feedback. There are plenty of relevant IEEE papers.
  14. qiushidaren

    Why we need to connect the bulk of NMOS to GND and the bulk of PMOS to VDD?

    Bulk connection Because we don't want the unwanted vertical parasitical diodes to be turned on.
  15. qiushidaren

    Info about Binominal Formula

    Hi all, I wanna know more about binominal formula, can someone provide me some tutorials about it, especially I am not familiar with this kind of expression: (), thank you for your time and help!
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