Title :
A fast method for Transistor Circuit Voltage Range analysis using linear programming
Author :
Höppner, Sebastian ; Henker, Stephan ; Schüffny, René ; Graupner, Achim
Author_Institution :
Tech. Univ. Dresden, Dresden, Germany
Abstract :
This paper presents a method for fast, automated analysis of device constraints in analog CMOS circuits. A linearized operating point (LOP) model is proposed which allows device constraints like saturation conditions to be formulated as system of linear inequalities (linear program) with circuit node voltages as free variables. The LOP model parameters are obtained from device lookup tables (LUTs) from a single DC simulation. The linear program is solved to obtain valid voltage ranges of supply, input or biasing nodes. Practical examples show that this method provides fast analysis of device constraints with good accuracy over a wide range of CMOS technologies without numerous, time-consuming circuit simulations. Therefore it is well suited for analog design automation applications.
Keywords :
CMOS analogue integrated circuits; linear programming; table lookup; transistor circuits; LOP model; analog CMOS circuits; circuit node voltage; device lookup tables; linear inequalities; linear programming; linearized operating point model; single DC simulation; time-consuming circuit simulations; transistor circuit voltage range analysis; Accuracy; CMOS integrated circuits; Integrated circuit modeling; MOS devices; Semiconductor device modeling; Table lookup; Transistors; CMOS; analog design; constraints; linear programming; voltage range analysis;
Conference_Titel :
Mixed Design of Integrated Circuits and Systems (MIXDES), 2010 Proceedings of the 17th International Conference
Conference_Location :
Warsaw
Print_ISBN :
978-1-4244-7011-2
Electronic_ISBN :
978-83-928756-4-2
