Modeling of power supply induced jitter (PSIJ) transfer function at inverter chains

An analytical model of power supply noise induced jitter (PSIJ) at inverter chains is proposed. Based on the piecewise linear approximated I-V curve model, closed-form equations of PSIJ transfer function at a single inverter are derived. The PSIJ transfer function of an inverter chain output is then obtained by linearly stacking the single inverter-PSIJ transfer functions. Accuracy of the proposed analytical model is successfully validated by SPICE simulations. In addition, characteristics of the PSIJ transfer function at inverter chains are discussed.