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<#347 LVS behaviour with parallel MIM Capacitors> ...
# ihp-sg13g2
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01/30/2025, 9:34 PM
#347 LVS behaviour with parallel MIM Capacitors
Issue created by
adrienluitot
When I stick 2 MIM caps with through Metal 5 and TopMetal 1 to use them in parallel, the LVS won't detect the capacitors at all. (Case 1) If I space them, the LVS will detect 2 independent MIM caps. (Case 2) And if keep the space, but fill it with Metal 5 and TopMetal 1 to connect them as if they were stuck, the LVS detect 1 MIM cap with a multiplier=2. (Case 3) For the case 2 and 3, the space can be as small as 0.005um. In the end, what I would expect, is a Layout like in case 1, but with LVS results like in case 3. I don't really understand why the LVS results between case 1 and 3 are so different. Also, maybe I'm not doing the parallelisation properly? ---
Case 1
Layout:
https://github.com/user-attachments/assets/d8f9db93-ecc8-4bd8-82be-50257feb44a3
LVS: ---
Case 2
Layout:
https://github.com/user-attachments/assets/c13ef068-1dd9-44d1-b851-60f1c287d1e2
LVS:
Image
---
Case 3
Layout:
https://github.com/user-attachments/assets/b96b9533-d891-43e1-bfdb-ffc37c469a3c
LVS:
Image
IHP-GmbH/IHP-Open-PDK
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