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Digitální knihovna VUT

Article . 2016 . Peer-reviewed

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Tunable fully-differential filter employing MOTA and DACA elements

Name: Tunable fully-differential filter employing MOTA and DACA elements
Keywords: DACA, current amplifiers, frequency filter, single-ended, operational transconductance amplifier, current-mode, MOTA, experimental results, fully-differential

descriptionPublicationkeyboard_double_arrow_right Article 19 Sep 2016 Czech Republic English Publisher:NISCAIR-CSIR

Authors: Langhammer, Lukáš; Jeřábek, Jan; Polák, Josef; Šotner, Roman; Štork, Petr;

handle: 11012/204345

Tunable fully-differential filter employing MOTA and DACA elements

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Abstract

A new fully-differential (F-D) filtering structure of the 2nd-order current-mode universal filter is described in this paper. Presented filter is also proposed in a single-ended (S-E) form in order to compare behavior of single-ended and fully-differential structures. Signal-flow graphs method is used to design both presented filters. Multi-output transconductance amplifiers (MOTAs), digitally adjustable current amplifier (DACA), multi-output current follower (MO-CF) and fully differential current follower (FD-CF) were used in proposal. Filters possess of ability to adjust their pole frequency and quality factor independently of each other. The actual function of proposed filters has been verified by PSpice simulations and experimental measurements.

Country

Czech Republic

Related Organizations

Brno University of Technology
Czech Republic

Keywords

DACA, current amplifiers, frequency filter, single-ended, operational transconductance amplifier, current-mode, MOTA, experimental results, fully-differential

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