Technology CAD — Computer Simulation of IC Processes and Devices

208 5.4 Threshold Voltage in Nonuniform Substrate 217 5.5 MOS Device Design by Simulation . 224 5.5.1 Body-bias Sensitivity of Threshold Voltage 225 5.5.2 Two-region Model . 242 6 Bipolar Transistors 243 6.1 Introduction ... 243 6.2 Lateral pnp Transistor Operation 245 6.3 Transport Current Analysis ...