Modelling RTN and BTI in nanoscale MOSFETs from device to circuit: A review

• Statistical Variability (SV) impact summary on bulk MOSFETs performances Ion and Vt dispersion.
• Single and several fixed charges impact on device performances in interaction with SV.
• Traps dynamics in combination with SV; identification of permanent and recoverable parts.
• Impact of device to device variability comparison with stochastic charge injection.
• Time dependent variability simulation framework from device to circuit; BTI impact on SRAM cells.

In this paper we summarize the impact of Statistical Variability (SV) on device performances and study the impact of oxide trapped charges in combination with SV. Traps time constants are described and analysed in combination with SV and time dependent simulations are performed including SV, random traps and charge injection stochasticity. Finally we demonstrate the necessity of statistical simulations in extracting compact models of aged devices and we address the problem of aged SRAM cell reliability.