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Recent content by truejiaqi

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    What software is the best to view gdsII file under windows?

    Hi, What do you use to quick view gdsII files in windows? It would be very convenient to have a small tool to do this quickly. I tried a few, they are either too slow for big gds files or does not work correctly at all. freeware or crackware are all welcome. Thanks a lot!
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    What is "direct wafer writing" ?

    I guess it could be referring to the "electron beam exposure" to make a pattern on the wafer, where instead of using a mask and some UV light, they use electron beams to shoot on the wafer. Then you also need a special chemical material which is sensitive to this e-beam. This is recalled from my...
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    Problem with Diva LVS when using multi-finger transistors

    diva lvs there is only a field called "multiplication factor" in the transistor properties, and I have set it to the correct value. Diva just does not understand it.
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    Operational Amplifier Linearity

    decreasing gain of opamp should never be of concern if a negative feedback configuration is used. Although distortion increases when signal goes large, in negative feedback, the largest signal is defined by the feedback factor instead of the open loop gain of the opamp. In fact when open loop...
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    Problem with Diva LVS when using multi-finger transistors

    Hi, I am using Diva LVS checking my design. But there is a strange phenomena that, when I use muli-finger transistors, it can not recognize the multiplication factor in the device properties in schematic. Therefore it generates errors about Size mismatch errors. For instance, I have a pmos with...

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