Title :
Modeling of the power-supply interactions of CMOS operational amplifiers using symbolic computation
Author :
Gielen, Georges G E ; Sansen, Willy M C
Author_Institution :
Katholieke Univ. Leuven, Heverlee, Belgium
Abstract :
Parasitic interactions through the power supply lines, the substrate or capacitive crosstalk put major limitations on the performance of analog integrated circuits, especially in mixed analog-digital ASICs. A general method is presented for modeling power supply interactions based on symbolic computation. Complete and accurate new models for the power supply rejection ratio (PSRR) of CMOS operational amplifiers are provided and are verified with simulation. The models include both mismatch and high-frequency effects. Different topologies are compared and design rules are derived from the models
Keywords :
CMOS analogue integrated circuits; crosstalk; integrated circuit modelling; operational amplifiers; symbol manipulation; CMOS operational amplifiers; analog integrated circuits; capacitive crosstalk; design rules; high-frequency effects; mismatch effects; mixed analog-digital ASICs; power supply rejection ratio; power-supply interactions; symbolic computation; Analog integrated circuits; Analog-digital conversion; Circuit simulation; Computational modeling; Crosstalk; Operational amplifiers; Power amplifiers; Power supplies; Semiconductor device modeling; Topology;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393989
