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What is the difference between net-based and pin-based simulations in Sigrity XtractIM?

SimTech

Sigrity XtractIM extracts the most common electrical models of IC packages according to IBIS (I/O Buffer Information Specification) as well as SPICE netlist of electrical models. In XtractIM Simulation Setup, there are two options, Net-Based and Pin-Based.

The difference between the two options is the level of detail of the structure of the model being simulated. Use the Net-Based option for models such as IBIS or general SPICE models for users with PCB focus. Use the Pin-Based option for a chip-package, co-design flow because it lets you specify the connections or resolution of the package model in more details.

IBIS/RLGC – Net-Based option

The Net-Based option generates one circuit terminal per net per device. This means that in a typical setup of a single-die BGA package, you have two terminals in the netlist for each power net, and all nets are not placed in the ground nets-group. All nets in the GroundNets group are shorted together and used as the current return path.

IBIS/RLGC- Pin-Based option

Using the Pin-Based extraction option, you can control where you get terminals in the equivalent model in a very detailed way. In XtractIM, the interface looks as shown below:

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