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Recent content by gunpla

  1. gunpla

    some problem for simulink

    singularity in the solution simulink Dear All: i have the problem for simulink: ??? Error using ==> sim Trouble solving algebraic loop containing 'novel1_test/1-b ADC' at time 0. Stopping simulation. There may be a singularity in the solution. If the model is correct, try reducing the step...
  2. gunpla

    How to measure slew rate(SR) for fully differential OTA?

    Dear All: i would like to measure the slew rate(SR) and slew rate output(SRO) for fully differential OTA. i search the three method of measured evnironment if these method mistake can someone tell me measured scheme or upload the schematic? thanks!
  3. gunpla

    How to choose the single stage OP with gain boost?

    Hi! jonashat! My design is using .18. this OP Amp. is fully differential OP, i wanna higher ouput swing. Thank you! banilliu! Doesn't the two-stage OP also have GBW problem?
  4. gunpla

    How to choose the single stage OP with gain boost?

    Thanks you, iamxo. but the output stage of folded cascade is also cascode, the output swing could be limited.
  5. gunpla

    How to choose the single stage OP with gain boost?

    Dear All: i would like to design an OP Amp. which has wide GBW, high gain(>60), and rail-to-rail output swing in power supply of 1.5v. therefor the single stage OP with bain boost is selected. but this also need higjer output swing, hence the telescope OP with gain boost can't be...
  6. gunpla

    Design problem for CMFB

    Dear All: i need to design common mode feedback(CMFB) for fully differential OPAmp but i don't know to determine the value of R(SC) and C how to design these two value in SC base circuit? thanks for your read
  7. gunpla

    Question about MASH delta-sigma Modulator

    after running hspice,you can get output by .lis file if using .print in your simulation file then open .lis and delete you don't want information save you data as .mat in matlab command windows load('-ascii','file name') the file must in your current directory then process the matrix by...
  8. gunpla

    How to implement the four phase clock in digital logic?

    Thanks for SkyHigh but i must use full-custom flow to implement this block
  9. gunpla

    How to implement the four phase clock in digital logic?

    Dear All: as the figure, i need four phase control clock but i would like to implement in digital logic (like FF or logic gate) who can tell me the search name or schematic ? thanks
  10. gunpla

    How to implement data delay in switched capacator CKT?

    Dear All: i need a SC CKT that delay one clock,like z^-1 in z domain, but i can't use sampled and hold CKT how can i implement CKT ? thank for your read
  11. gunpla

    Alternate pulse router circuits schematics

    This is divide by two? Dear All: I need control signal like blow figure, who can tell me what is it name? or tell me it's schematic thanks!
  12. gunpla

    What is different for "UGBW" and "GBW" ?

    what is ugbw Dear All: I don't know these two words "unity gain bandwidth(UGBW)" and "gain banwidth(GBW)", who can tell me their different? thinks!
  13. gunpla

    What is a 2-Phase Non-Overlapping Clock?

    the circuit of the nonoverlapping clock is shown in blow
  14. gunpla

    What dose the "Slotted metal" mean in fabrication

    The mean is depositing metal befor digging the slot?
  15. gunpla

    What dose the "Slotted metal" mean in fabrication

    Dear All. What dose the "Slotted metal" mean in IC fabrication process ? thanks for your answer^^

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