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AR# 13669

What are the input and output capacitance values for a particular package?

描述

What are the input and output capacitance values for a particular device package combination?

解决方案

The DC and Switching Characteristics Data Sheet lists a maximum "Cin" value (for example& 10 pF) based on device characterization.

You can find capacitance values that stem from process models in the IBIS file.

"C_pkg" is a lumped approximation of the package capacitance, and "C_comp" is the capacitance of the die.

For rough calculations, you can add these values to determine the total pin capacitance. 

 

To accurately model the behavior of any signal, you should perform IBIS simulation.

IBIS models for Xilinx devices can be found at the following link:

https://www.xilinx.com/support/download.html

Select Device Model, IBIS Models then the required Family.

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相关答复记录

Answer Number 问答标题 问题版本 已解决问题的版本
50197 SelectIO Design Assistant: Performance - Factors Affecting Performance N/A N/A
AR# 13669
日期 09/04/2017
状态 Active
Type 综合文章
器件
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