Naslov
Low Active-Sensitivity Allpole Active-RC Filters Using Impedance Tapering

Autori
Jurišić, Dražen ; Moschytz, George S. ; Mijat, Neven

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of The 2003 IEEE International Symposium on Circuits and Systems, Vol. I / Vancouver, Canada, May, 23-26, 2004 / Antoniou, Andreas ; Trajkovic, Ljiljana - Vancouver : Institute of Electrical and Electronics Engineers (IEEE), 2004, 89-92

Skup
2004 IEEE International Symposium on Circuits and Systems

Mjesto i datum
Vancouver, Kanada, 23.05.2004. - 26.05.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
impedance tapering; low-passive sensitivity; low-active sensitivity; low-power; allpole active-RC filters

Sažetak
To reduce the low-power allpole active-RC filter's output magnitude sensitivity to passive components, the "impedance tapering" design method was used. This design procedure has been applied to the design of 2nd- and 3rd-order low-pass (LP) (class 4) Sallen-and-Key filters and has already been published [1]. In this paper the active sensitivity analysis using MATHEMATICA was performed on the same "impedance tapered" filter sections as in [1]. The analysis was performed by calculation of the real filter's transfer-function magnitude which was denormalized to various cut-off frequencies from low to high, using a single-pole model of a real operational amplifier. The amount of active and passive sensitivity reduction was compared using the same degree of impedance tapering. It was demonstrated that both sensitivities, i.e. active and passive, were correspondingly reduced for the same filter. Thus, a judicious selection of component values accounts for a considerable decrease in both passive and active sensitivities.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA