Title :
Tolerance analysis of continuous-time Gm-C filters
Author :
Koziel, Slawomir ; Szczepanski, Stunislaw
Author_Institution :
Fac. of Electron., Telecommun. & Informatics, Tech. Univ. Gdansk, Poland
Abstract :
In this paper, an efficient approach to tolerance analysis of arbitrary Gm-C filters is investigated. We present a general structure of Gm-C filter of arbitrary order as well as its matrix description. Using this approach, we derive formulas that allow us to calculate the change of filter transfer function caused by deviation of filter element values from their nominal values. The computational cost of evaluation of these formulas is low, which makes them suitable for performing statistical analysis of arbitrary Gm-C filters. They can also be used to analyse the influence of parasitics on filter characteristics. Several application examples, including worst case analysis of high-order Gm-C filters, are presented and discussed.
Keywords :
computational complexity; continuous time filters; statistical analysis; tolerance analysis; transfer function matrices; arbitrary order filters; computational complexity; continuous-time Gm-C filters; filter element value deviation; filter matrix description; filter transfer function change; parasitics; statistical analysis; tolerance analysis; transconductance-capacitor technique; worst case analysis; Capacitance; Capacitors; Chromium; Differential equations; Filters; Tolerance analysis; Transconductance; Transconductors; Transfer functions; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301807
