In the beginning there was transient simulation. Ensuring functional chip-to-chip links in a system meant performing a time-domain simulation with a SPICE simulator. The result was a time-domain waveform that was evaluated during post processing for signal integrity (SI). The main task was to measure the eye diagram, usually assuming a perfect clock as the phase reference. Due to rising signaling speeds and decreasing timing margins, the task was made more challenging when it became necessary to account for other effects.
Using ADS for Signal Integrity Optimization
Keysight
