open-source-silicon.dev

<https://github.com/IHP-GmbH/IHP-Open-PDK/pull/398|#398 Esd devices>
Pull request opened by <https://github.com/KrzysztofHerman|KrzysztofHerman>
This PR provides ESD device support, in details `ESD diodes` and `nmos` clamps

• xschem symbols and examples
• spice models for ngspice and Xyce
• klayout PyCell code for device generation

The devices are the following:

• ESD VDD diodes `diodevdd_2kv` and `diodevdd_4kv`
• ESD VSS diodes `diodevss_2kv` and `diodevss_4kv`
• ESD nmos clamps `nmoscl_2` and `nmoscl_4`

Xschem symbols:

<https://private-user-images.githubusercontent.com/141824113/424933364-0f261dc4-2605-46e9-bbe5-0fbabce4e05d.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDI0NjgyNTYsIm5iZiI6MTc0MjQ2Nzk1NiwicGF0aCI6Ii8xNDE4MjQxMTMvNDI0OTMzMzY0LTBmMjYxZGM0LTI2MDUtNDZlOS1iYmU1LTBmYmFiY2U0ZTA1ZC5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzIwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMyMFQxMDUyMzZaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0zNjA1ZTY3YTgxNWM1ZTY2NTBmN2NjY2NlNThmN2Q4YmI4ODQ1Y2E2NDYyYmYxNTYyOTFmOGZmM2RiYTVkZjk5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.8DKvYMVORfQPHsTZEK1hQiuyOK3uW6377zXHckppP_M|[image](https://private-user-images.githubusercontent.com/141824113/424933364-0f261dc4-2605-46e9-bbe5-0fbabce4e05d.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDI0NjgyNTYsIm5iZiI6MTc0MjQ2Nzk1NiwicGF0aCI6Ii8xNDE4MjQxMTMvNDI0OTMzMzY0LTBmMjYxZGM0LTI2MDUtNDZlOS1iYmU1LTBmYmFiY2U0ZTA1ZC5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzIwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMyMFQxMDUyMzZaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0zNjA1ZTY3YTgxNWM1ZTY2NTBmN2NjY2NlNThmN2Q4YmI4ODQ1Y2E2NDYyYmYxNTYyOTFmOGZmM2RiYTVkZjk5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.8DKvYMVORfQPHsTZEK1hQiuyOK3uW6377zXHckppP_M)>

Device layouts:  
<https://private-user-images.githubusercontent.com/141824113/424935657-fae6d5ad-c798-44bf-9101-d9a2bc32b8dc.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDI0NjgyNTYsIm5iZiI6MTc0MjQ2Nzk1NiwicGF0aCI6Ii8xNDE4MjQxMTMvNDI0OTM1NjU3LWZhZTZkNWFkLWM3OTgtNDRiZi05MTAxLWQ5YTJiYzMyYjhkYy5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzIwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMyMFQxMDUyMzZaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT05YTQ5YWU2MjNiZDM1ZjY0ODM4M2JiMTRhZDQyZDM1YzA3YjRiOWQ4N2E3ZmM5MjFiNjQxMjAwODEwMDAxNzg5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.cY5mlNqq6P2TpLKASRNDaUSSyqL68qV5KCUdf5jUyOk|[image](https://private-user-images.githubusercontent.com/141824113/424935657-fae6d5ad-c798-44bf-9101-d9a2bc32b8dc.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDI0NjgyNTYsIm5iZiI6MTc0MjQ2Nzk1NiwicGF0aCI6Ii8xNDE4MjQxMTMvNDI0OTM1NjU3LWZhZTZkNWFkLWM3OTgtNDRiZi05MTAxLWQ5YTJiYzMyYjhkYy5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzIwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMyMFQxMDUyMzZaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT05YTQ5YWU2MjNiZDM1ZjY0ODM4M2JiMTRhZDQyZDM1YzA3YjRiOWQ4N2E3ZmM5MjFiNjQxMjAwODEwMDAxNzg5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.cY5mlNqq6P2TpLKASRNDaUSSyqL68qV5KCUdf5jUyOk)>
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>

<https://github.com/IHP-GmbH/IHP-Open-PDK/pull/398|#398 Esd devices>
Pull request closed by <https://github.com/KrzysztofHerman|KrzysztofHerman>
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>