NDLI: New resistorless and electronically tunable realization of dual-output VM all-pass filter using VDIBA

Content Provider	Springer Nature Link
Author	Herencsar, rbert Minaei, Shahram Koton, Jaroslav Yuce, Erkan Vrba, Kamil
Copyright Year	2012
Abstract	In this paper, a new active element called voltage differencing inverting buffered amplifier (VDIBA) is presented. Using single VDIBA and a capacitor, a new resistorless voltage-mode (VM) first-order all-pass filter (APF) is proposed, which provides both inverting and non-inverting outputs at the same configuration simultaneously. The pole frequency of the filter can be electronically controlled by means of bias current of the internal transconductance. No component-matching conditions are required and it has low sensitivity. In addition, the parasitic and loading effects are also investigated. By connecting two newly introduced APFs in open loop a novel second-order APF is proposed. As another application, the proposed VM APF is connected in cascade to a lossy integrator in a closed loop to design a four-phase quadrature oscillator. The theoretical results are verified by SPICE simulations using TSMC 0.18 μm level-7 CMOS process parameters with ±0.9 V supply voltages. Moreover, the behavior of the proposed VM APF was also experimentally measured using commercially available integrated circuit OPA860 by Texas Instruments.
Starting Page	141
Ending Page	154
Page Count	14
File Format	PDF
ISSN	09251030
Journal	Analog Integrated Circuits and Signal Processing
Volume Number	74
Issue Number	1
e-ISSN	15731979
Language	English
Publisher	Springer US
Publisher Date	2012-08-31
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analog signal processing All-pass filter Electronically tunable circuit Four-phase quadrature oscillator Loading effect Resistorless filter Voltage-mode Voltage differencing inverting buffered amplifier (VDIBA) Circuits and Systems Electrical Engineering Signal, Image and Speech Processing
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Signal Processing Hardware and Architecture

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