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Recent content by whitewiz

  1. W

    How to use PWL_File in Agilent ADS

    I saved real voltage output data from the impedance analyzer as a CVS excel file and then, I usually put real data using VPWL_FILE source from the Pspice simulation. So, I could use the voltage source with real voltage signals and simulated some simple design together. From ADS, I found VtPWL...
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    TSMC 0.13 or 0.18 um design kit for ADS 2005

    High Voltage TSMC 0.18 design kit for ADS 2005 I am looking for High voltage TSMC 0.18 um design kit which can be used for ADS 2005. It would be really appreciated if you have that. My e-mail is whitecoven@hotmail.com. Thanks in advance Chris
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    How to import text data format into Agilent ADS program ?

    I have simulation impedance data file which is text or excel(csv) format. And, then, I will import these file into Agilent ADS program and then, plot it with a separate graph to compare with another simulation plot of my designed circuit together. So, I can compare how similar two graph is...
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    How to convert diode pspice model with 3 pin ?

    I have got PMBD7000 (3 pin diode) Pspice model from NXP Semiconductor web-site. This model contains 2 diodes and 3 pins in the diagram After automatic converting the spice file of PMBD7000(Lib->OLB) using Pspice model editor and put the library in the OrCAD Capture window, only 2 pin symbols are...
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    Pulse width measurement with 1 cycle or 1 tone wave ?

    If we need to measure rise/fall or pulse width of device, we need to apply square or pulse wave from function generator. Can I use 1 cycle square or pulse wave instead of continuous(CW) 1 tone wave from function generator ? I want to get the pulse width(50%) of the diode limiting devices.
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    Question about experiment data used in PSPICE.

    I am using Pspice Capture(schematic) so I had better use PWL source instead of ETABLE under ABM library. When I found ETABLE from OrCAD PSPICE User Guide, I must manipulate the source in Spice code. Anyway, thanks for your explanation. Added after 9 minutes: Thanks for your description. I...
  7. W

    OrCAD PSpice problem--mote carlo analysis - sigma calculate!

    Re: OrCAD PSpice problem--mote carlo analysis - sigma calcul Unfortunately, picture does not show up. Please re-upload the picture.
  8. W

    Question about experiment data used in PSPICE.

    Thanks for your reply. That means I need to put the data one by one. Is that right ? My data in excel file has around 1000 lines so I am wondering it is a kind of way to read the input data directly without putting the value.
  9. W

    Question about experiment data used in PSPICE.

    I am designing the simple operational amplifier and I need to use and simulate the input from the experiment data of the Oscilloscope. And I want to check how much opamp will amplify this experiment data. The waveform is a kind of arbitrary waveform from oscilloscope. Is there any ways to use...
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    Inductor value with SRF for amplifier design

    For 100MHz low noise preamplifier design on the breadboard, the load inductor is around 1.2uH for my design. I want to show the bandwidth between 70MHz and 130MHz for this amplifier. Should I consider the SRF(Series resonant frequency) for bandwidth ? Or care about center frequency (100MHz)...
  11. W

    which opamp is good for 100MHz high pass sallen key filter ?

    Re: which opamp is good for 100MHz high pass sallen key filt As far as I know, slew rate is proportional to bandwidth. So high slew rate can satisfy the broad bandwidth. How much is good slew rate for this kind of high pass filter ? Thank you for your answer and your comment is really...
  12. W

    which opamp is good for 100MHz high pass sallen key filter ?

    Re: which opamp is good for 100MHz high pass sallen key filt Thank you for your answer. Is this Opamp(AD8039) library which I can use in PSPICE 9.1 or Agilent ADS 2005A software ? I can not find this opamp in the library of PSPICE or ADS. Your help is much appreciated if you recommend if...
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    which opamp is good for 100MHz high pass sallen key filter ?

    Re: which opamp is good for 100MHz high pass sallen key filt I think the cut-off frequency need to decreased to at least 10MHz because the output should filter out in the low frequency and then, I need to find the wideband opamp. Thank you so much for your answer Added after 1 minutes: I...
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    which opamp is good for 100MHz high pass sallen key filter ?

    related:www.national.com/an/oa/oa-26.pdf I need to design 2nd order 100MHz sallen key filter and looking for good opamp. The cut-off frequency of the filter is 100MHz. I used LM324 opamp but this kills the gain before 100MHz. My simulator is PSPICE and they have lots of library. Could you...
  15. W

    Constant gm filter design

    From your answer, the filter can not help the preamplifier to get output with this kind of specification. Is that right ? I am also confused about the concept so I am asking the question here. I guess the bandwidth of the Ultra wide band amplifier is 2 or 3 times bigger than center frequency. I...

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