Title :
Optimizing bandwidth power efficiency of a CMOS transconductor
Author :
Guo, N. ; Raut, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A novel figure of merit to describe the bandwidth power efficiency of CMOS transconductors-gac/Pdiss is proposed. The analytical gac/Pdiss expressions of cross-coupled differential pair transconductor are derived and optimized in two different ways: univariable unconstrained and multivariable constrained optimization. Linearity characteristic of the optimally biased transconductor is also studied for every possible transconductance expression. The analytical results are verified by numerical and HSPICE simulation results
Keywords :
CMOS analogue integrated circuits; SPICE; circuit optimisation; integrated circuit design; CMOS cross-coupled differential pair transconductor; HSPICE; bandwidth power efficiency; figure of merit; linearity; multivariable constrained optimization; numerical simulation; univariable unconstrained optimization; Analytical models; Bandwidth; Capacitance; Constraint optimization; Energy consumption; Linearity; Numerical simulation; Optimization methods; Transconductance; Transconductors;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857399
