OTA-C Current-mode Biquads derived from Passive Filters

Kamath, D V (2015) OTA-C Current-mode Biquads derived from Passive Filters. Transactions on Engineering and Sciences, 3 (5). pp. 47-54. ISSN 2347-1964

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Abstract

This paper presents the new OTA-C current-mode/ transimpedance second-order continuoustime filters based on passive R-L-C circuits using component substitution method. The resistor and inductor in these biquads are realized using OTA-C counterparts. The current through resistor/ inductor is used to implement useful current-mode transfer functions in addition to transimpedance filters. The current through resistor/ inductor is made available using a dual output OTA (DO-OTA) in place of single output OTA (SO-OTA). The proposed biquads are attractive due to their advantageous features like ease of design, good sensitivity and orthogonal tunability of pole-Q. The biquads have been simulated using practical OTAs as well as their behavioral macro-model and the results are given to verify the theoretical analysis.

Item Type: Article
Uncontrolled Keywords: Analog Signal Processing, Operational Transconductance Amplifier, Voltage-mode, Current-mode, Transimpedance mode, Biquad filter
Subjects: Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 02 Nov 2016 10:35
Last Modified: 02 Nov 2016 10:35
URI: http://eprints.manipal.edu/id/eprint/147446

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