Journal ArticleDOI
Tunable mixed-mode OTA-C universal filter
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TLDR
In this article, a novel electronically tunable mixed-mode universal biquad by using four single-output and one dual-output-operational transconductance amplifiers, two grounded capacitors is proposed.Abstract:
A novel electronically tunable mixed-mode universal biquad by using four single-output and one dual-output-operational transconductance amplifiers, two grounded capacitors is proposed. The proposed circuit has ability to realize voltage, current, transconductance, and transresistance mode, and can the following advantageous features: (i) realization of low-pass, band-pass, high-pass, notch, and all-pass filter responses from the same configuration, (ii) employment of only grounded capacitors ideal for integrated circuit implementation, (iii) orthogonal controlling of ? o and Q for easily electronic tunability, and (iv) low active and passive sensitivity performance. Finally, to verify our architecture, we have designed this analog filter chip with TSMC 0.35-μm 2P4M CMOS technology. This chip operates to 1 MHz and consumes 30.95 mW. The chip area of the analog filter is about 0.823 mm2.read more
Citations
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New CMOS Realization of Voltage Differencing Buffered Amplifier and Its Biquad Filter Applications
Fırat Kaçar,Abbas B. Noori +1 more
TL;DR: In this paper, a voltage-mode biquad filter configuration using a recently introduced active element, namely Voltage Differencing Buffered Amplifier (VDBA), is proposed, which has high impedance input terminals and low impedance output terminal, providing advantages at voltage mode circuits.
Journal ArticleDOI
Electronically tunable low-voltage mixed-mode universal biquad filter
TL;DR: This study presents an electronically tunable low-voltage mixed-mode universal biquad filter that can realise low pass, band pass and high pass responses in all the four possible modes, that is, voltage-mode, current- mode, trans-admittance- mode and trans-impedance-mode from the same configuration.
Journal ArticleDOI
Multiple-input single-output universal biquad filter using single output operational transconductance amplifiers
TL;DR: A novel universal biquad filter topology, realized using Operational Transconductance Amplifiers as active elements, that offers the benefits of orthogonal adjustment of the resonance frequency and the quality factor of the filter and, also, resistorless realization with grounded capacitors is presented.
Current-Controlled Current-Mode Universal Biquad Employing Multi-Output Transconductors
TL;DR: In this paper, a RC active biquad working in the so-called current mode (CM) is presented, which uses only three transconductors (OTA) with the minimum necessary number of outputs and with only three passive grounded elements.
Journal ArticleDOI
Mixed-Mode Universal Biquad Filter Using OTAs
TL;DR: This paper introduces an electronically tunable mixed-mode universal biquad filter configuration employing four single output operational transconductance amplifiers, one dual output OTA and two grounded capacitors (GCs) (ideal for integrated circuit implementation and absorbing shunt parasitic capacitances).
References
More filters
Journal ArticleDOI
A 22.5 MHz current-mode KHN-biquad using differential voltage current conveyor and grounded passive elements
TL;DR: In this article, a currentmode Kerwin-Huelsman-Newcomb (KHN) biquad is proposed, which employs three differential-voltage current conveyors (DVCCs) as active elements together with two capacitors and four resistors as passive elements, which all are grounded.
Journal ArticleDOI
New multifunction OTA-C biquads
TL;DR: In this article, some novel multifunction biquadratic filters, each of which employs two to three operational transconductance amplifiers and two capacitors, are presented, which offer the following advantageous features.
Journal ArticleDOI
A novel mixed-mode OTA-C universal filter
TL;DR: In this article, a mixed-mode biquad circuit using six single-output and one dual-output-operational transconductance amplifiers and two grounded capacitors is presented.
Journal ArticleDOI
Universal current-mode OTA-C biquad with the minimum components
Chung-Ming Chang,Shih-Kuang Pai +1 more
TL;DR: A universal current mode operational transconductance amplifier-capacitor (OTA-C) biquad with three inputs and four outputs employing the minimum of components: only two OTAs and only two grounded capacitors is presented.
Journal ArticleDOI
Current-mode high-order OTA-C filters
TL;DR: In this paper, a new way to implement current-mode continuous-time filters using operational transconductance amplifiers (OTAs) is presented based on the simulation of a signal flow graph on the all-pole lowpass transfer function.