(The bare pads are without ESD right, or are they?...
# analog-designp
Pepijn de Vos
08/02/2022, 12:24 PM(The bare pads are without ESD right, or are they?)
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Arman Avetisyan
08/02/2022, 12:34 PMthey have no protection
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Tim Edwards
08/02/2022, 12:44 PMThe ESD devices have very specific layouts and are characterized only for those layouts, which is why there are no device generators; you would just need to use the vendor GDS for the device (some of which are in the I/O cells and have not been broken out into independent layouts).
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Pepijn de Vos
08/02/2022, 12:45 PMSo... where do I get those GDS?
Pepijn de Vos
08/02/2022, 12:46 PMand just.... how do I connect them? Like so? That's the only example I've been able to find with a single fet, and it doesn't make sense to me.
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Tim Edwards
08/02/2022, 12:54 PMOften that's nothing more than an nFET (a large one) with the gate tied to ground.
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yrrapt
08/02/2022, 1:32 PM@Pepijn de Vos it's called a grounded gate NMOS structure. That term should give you more details on google
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