ripoo82
Junior Member level 2
- Joined
- Sep 18, 2012
- Messages
- 22
- Helped
- 2
- Reputation
- 4
- Reaction score
- 1
- Trophy points
- 1,283
- Activity points
- 1,425
Generally, a deep N-Well is surrounded by a P+ guard ring for noise suppression.
I was wondering if the distance of the guard ring to the N-Well can have an effect on its effectiveness. For example, can in a 40nm technology, the P+ ring be to close to the DNW. Do I place it as close to the DNW as possible, or is it better to have a space (example, 1um)?
I was wondering if the distance of the guard ring to the N-Well can have an effect on its effectiveness. For example, can in a 40nm technology, the P+ ring be to close to the DNW. Do I place it as close to the DNW as possible, or is it better to have a space (example, 1um)?