Nonisothermal Effects in SOI CMOS Analog Integrated Circuits Based on Electrothermal Simulation

An analytical approach to electrothermal simulation of SOI integrated circuits is presented, accounting for large temperature gradients in the devices. Electrothermal simulations of SOI analog circuits in Spice coupled with the nonisothermal approach are performed and compared with the isothermal BSIMSOI thermal circuit. Heat flow, thermal coupling and self-heating effects in some SOI analog integrated circuits are examined. Nonisothermal effects on some electrical properties of analog circuits are also briefly discussed