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GSG pads, if you use Signatone, is 150um between 2 probe(center to center), so that means you need 3 75*75 square pads, located evenly with 75um distance side to side.
Be careful when using GSG, the probe is very tough than common DC probe, and easily crumble your pads.
Hi, friends~~
Recently I design a Gilber Cell comparator for Flash ADC demonstration by III-V process. I have refered some GaAs guys' design, and find they modified the prototype, and add a level-shift at the end for the feedback signal. (refer to pic)
I don't think such structure can enhance...
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