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Managing pBulk Connection to Prevent Undesirable Extraction

Learn how to prevent open on ground in pBulk connections for NMOS layer, a crucial step in semiconductor design to avoid issues in LVS. Understand the concept of declaring soft connections to optimize substrate connections.

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Managing pBulk Connection to Prevent Undesirable Extraction

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  1. The body for the NMOS is the derived layer “pBulk”. pBulk is defined as geoNOT(nwell) LVS does not catch the open on ground, it forms a connection through the substrate, which is not in most cases desirable. My understanding is that it is possible to declare a connection as soft to prevent this type of extraction.

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