Circuit Modeling of Arbitrary Crystal Oscillator for EMC and SI Analysis

Quartz crystal oscillators are fundamental components in electronic circuits with stringent time requirements; providing a proper crystal oscillator model for simulation is crucial for Electromagnetic Compatibility (EMC) and Signal Integrity (SI) analysis. This paper presents two types of behavioral models of quartz oscillators for EMC-oriented circuit simulations. These behavioral models allow the oscillator to be simulated without the need to resort to the complete oscillator circuit. The proposed models are tested in simulation of four oscillators, operating at different frequencies. These models provide a tool for early-stage analysis of EMC and SI performance in electronic systems.