Dan Clement
Community Member
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Posts: 95
Salt Lake City, Utah, USA
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Be careful with a transistor like this... The model guys may not have characterized a structure like this and the models may not be accurate no matter how you lay it out.
I normally don't rely on anything but matching when I use devices like this. I have only really used very long transistors in startup circuits, diode stacks, and hysteresis.
I've seen all kinds of layout for long transistors but I don't recall ever hearing of someone having an issue between silicon and simulation with the exception of the power maybe.
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