Stats

  • Locked Locked
  • Replies 3
  • Subscribers 126
  • Views 15783
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Assura QRC extraction

Jinsung
Hi, I have a question about Assura QRC extraction.

When I have multiple ground nodes, which nodes do I need to set as a ‘Ref Node’ in the ‘Extraction’  tap of QRC parasitic extraction run form? Otherwise, do I need to just set the ‘Ref Node’ to the backside metal such as ‘wafer!’?

The reason I started to have a question was that the QRC simulation results varied depending on which ground node I set as a reference node.

Thanks,

Jinsung
Parents

  • Hi Quek,

    It was "decoupled" cap extraction mode. I switched to "coupled" mode as you recommend, and now the problem is cleared.

    For anybody reading this post, I recommend to refer the QRC extraction user manual (page 169/170) for this issue. There are examples showing the different extraction results with "coupled" and "decoupled" mode.

    Thanks,

    Jinsung

Reply

  • Hi Quek,

    It was "decoupled" cap extraction mode. I switched to "coupled" mode as you recommend, and now the problem is cleared.

    For anybody reading this post, I recommend to refer the QRC extraction user manual (page 169/170) for this issue. There are examples showing the different extraction results with "coupled" and "decoupled" mode.

    Thanks,

    Jinsung

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.