accurate parasitic extraction

hi all,
i need to do an accurate parasitic extraction , i heard about ads and electromagnetic simulation, about golden gate , i am a little lost, i usually use lpe from calibre . can somebody share exprerience pliz
thanks in advance

Hi,
Try StarRCXT. It is easy to use and can extract parasitic parameter for both spectre and Eldo.

okay, thanks a lot, i will give it a try

"accurate" has many different dimensions, or meanings.

Do you need to account for distributed frequency- or time-dependent electromagnetic effects (important for integrated inductors, may or may not be important for MIM or MOM capacitors, probably not important for parasitic coupling between interconnects), or complex shapes of the metals/vias/contacts that are different from as-drawn shapes in layout (and from nominal thicknesses in the process technology files) due to manufacturing effects in advanced technology nodes (CMP, etch/litho, etc.), or two- and three-dimensional current spreading effects in power device interconnects, etc. etc.

What level of accuracy do you need?

If +- 10-20% for the total net capacitance, and possible ignorance of capacitive coupling between remote (not next neighbor) nets is OK for you - then any "standard" parasitic extraction tool, from major EDA vendors, should work for you.
But make sure that all metal layers are included in your parasitic extraction setup (pay special attention to MIM layers - very often they are missing in parasitic extractors).

If you need an automated identification of ALL (even very small) capacitive coupling between nets, irrespective of their geometrical proximity, or super-high precision extraction (down to 0.01% accuracy) for capacitor mismatch characterization (caused by layout irregularities) for precision analog designs (ADC/DAC, etc.) - then you have to use random-walk based extraction tools (F3D from Silicon Frontline, QuickCap from Magma, etc.).