Abstract
Due to the semiconductor technology progresses, the process technology improves from .35um to 90nm and even to 65nm. Thus, there’s a trend that many companies make effort in developing SoC (system on a chip) and SiP (system in package). Both SoC and SiP have some advantages like small size and high performance, but they also have many difficulties in signal integrity. One signal integrity problem suffers from interconnects (on-chip), such as crosstalk issues between digital signal and analog signal interconnects and power level loss in power distribution interconnects. Compare SoC with SiP, SiP is based on bonding wires (off-chip) technology which yield is always high in the decades. Although the performance of SoC is slightly better than SiP, SiP has many advantages, such as easy debugging, short time-to-market, and less crosstalk or power level loss issues. SiP, which is not planned to replace SoC, provides another solution just. In addition to performance issues, inductance issue is another important one. Because of increasing frequency, to consider about this equation Z = R + jωL, where ω = 2πf and f is frequency. So, when frequency increases from tens MHz to several GHz, then “jωL” becomes critical now for it dominates and increases Z. If we can’t extract the inductance precisely, we will get lower yield. Therefore, in the thesis, we use this software, FastHenry L field solver, to extract inductance precisely and propose a method which can accelerate inductance extraction with accuracy. Although FastHenry may spend lots of time to extract inductance when the input structure is bigger, its accuracy is outstanding. In the proposed method, we write a program to generate FastHenry input files. First, it builds the inductance tables by using FastHenry. And with specified parameters of structures, look up program can locate the corresponding table for use later. That is, one table stands for one structure and the program will choose one based on user’s need. With the tables and information provided by user, the program can estimate inductance of the desired structures. We can get inductance in seconds by using look up program instead of using FastHenry which requires more execution time (several minutes) to extract inductance on the same structures.