CANCELLATION TECHNIQUE OF PARASITICS IN ACTIVE-FILTER DESIGN

Citation
T. Tsukutani et al., CANCELLATION TECHNIQUE OF PARASITICS IN ACTIVE-FILTER DESIGN, IEICE transactions on fundamentals of electronics, communications and computer science, E76A(6), 1993, pp. 957-960
Citations number
NO
Categorie Soggetti
Engineering, Eletrical & Electronic","Computer Applications & Cybernetics
ISSN journal
09168508
Volume
E76A
Issue
6
Year of publication
1993
Pages
957 - 960
Database
ISI
SICI code
0916-8508(1993)E76A:6<957:CTOPIA>2.0.ZU;2-K
Abstract
This letter presents a technique to cancel the parasitic effects of op erational amplifier (op amp) in active filter design. To minimize the effects, an op amp model considering the parasitics (i.e. both parasit ic poles and zeros) is utilized. It is shown that undesirable factors in the transfer function due to the parasitics can be canceled well by predistorting the passive element values of the circuit. As an exampl e, an active-R highpass filter is evaluated both theoretically and num erically. In this way, the proposed technique can be effectively incor porated into the design of active filters.