Active filter design using operational transconductance amplifiers: A tutorial
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TLDR
In this paper, the operational transconductance amplifier (OTA) is used in voltage-controlled amplifiers, filters, and impedances for continuous-time monolithic filters, where the total number of components used in these circuits is small, and the design equations and voltage-control characteristics are attractive.Abstract:
Basic properties of the operational transconductance amplifier (OTA) are discussed. Applications of the OTA in voltage-controlled amplifiers, filters, and impedances are presented. A versatile family of voltage-controlled filter sections suitable for systematic design requirements is described. The total number of components used in these circuits is small, and the design equations and voltage-control characteristics are attractive. Limitations as well as practical considerations of OTA-based filters using commercially available bipolar OTAs are discussed. Applications of OTAs in continuous-time monolithic filters are considered.read more
Citations
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Journal ArticleDOI
Are CMOS Operational Transconductance Amplifiers Old Fashioned? A Systematic Review
TL;DR: This systematic review aims to provide an overview of top journal papers published from 2017 to 2021 containing OTA design and contributes to highlight recent Ota design innovations.
Journal ArticleDOI
Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator
TL;DR: In this article , a special electronically tunable multiphase oscillator with arbitrarily and continuously adjustable phase shifts is introduced, where the phase around the asymptotical limit of 180° is set.
Journal ArticleDOI
A High-Q Active Inductor Circuit for Quasi-Millimeter-Wave Frequency Range
TL;DR: This paper describes a novel high-Q active inductor circuit configuration composed of an operational transconductance amplifier (OTA) and an input RC network that contributes to implement a cost-effective high- Q notch filter for frequencies up to quasi-millimeter-wave frequencies.
New minimum-component ota-based
TL;DR: Using a general oscillator structure, new oscillator circuits using two operational transconductance amplifiers (OTAs) and one externally connected passive element, exploiting the inherent zeros of the OTAs to advantage, were derived in this article.
Book ChapterDOI
Design of Low-Power Active High-Pass Filter Using Operational Transconductance Amplifier
TL;DR: In this paper, active high-pass filters are designed which operates at low voltage and also has very low-power consumption.
References
More filters
Journal ArticleDOI
High-frequency CMOS continuous-time filters
H. Khorramabadi,Paul R. Gray +1 more
TL;DR: Fully integrated, high-frequency continuous-time filters can be realized in MOS technology using a frequency-locking approach to stabilize the time constants using a phase-locked loop.
Journal ArticleDOI
Design of linear CMOS transconductance elements
A. Nedungadi,T. Viswanathan +1 more
TL;DR: In this paper, some novel circuit techniques for realizing linear CMOS tranconductance elements are proposed, which have superior linearity and input voltage range compared with the conventional source-coupled differential pair.
Journal ArticleDOI
Adaptive biasing CMOS amplifiers
TL;DR: In this paper, two transconductance amplifiers are presented in which the concept of an input dependent bias current has been introduced, and the amplifiers combine a very low standby power dissipation with a high driving capability.
Fully Integrated Analog Filters Using Bipolar-JFET Technology
R. D. Baertsch,W. E. Engeler,H.S. Goldberg,C.M. Puckette,Jerome Johnson Tiemann,David J. Allstot,Robert W. Brodersen,Paul R. Gray +7 more
TL;DR: In this paper, a new approach for realizing high-order analog filters which can be fully integrated using a compatible bipolar and ion-implanted JFET process is described, which is based on the recognition that what is really needed is a long time constant monolithic integrator.
Journal ArticleDOI
Gyrator video filter IC with automatic tuning
TL;DR: In this article, a single-chip gyrator filter for separating the components of the video signal in a TV receiver is described which is suitable for mass production in a standard bipolar process (f/SUB T//spl ap/400 MHz).
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