Abstract
Operational transresistance amplifier (OTRA) has attracted considerable attention in the recent literature in several applications such as impedance simulation, universal biquad filter realization, realization of sinusoidal oscillators and multivibrators. However, to the best knowledge of the authors, any OTRA-based generalized impedance simulator circuits have not been reported so far. The purpose of this paper is to present such a circuit.
Highlights
A large number of building blocks have been considered as an alternative to the classical voltage-mode operational amplifier (VOA) which suffers from the wellknown disadvantage of gain-bandwidth conflict, the Operational transresistance amplifier (OTRA) introduced in [1, 2] has been found to be attractive in analog signal processing/signal generation due to the following advantageous features: transmission properties similar to the current feedback op-amp, lack of slew rate limitations as encountered in VOAs, and having two low-impedance inputs and one low-impedance output
The OTRA is a three-terminal analog building block defined by the following matrix equation:
A new generalized positive
Summary
A large number of building blocks have been considered as an alternative to the classical voltage-mode operational amplifier (VOA) which suffers from the wellknown disadvantage of gain-bandwidth conflict, the OTRA introduced in [1, 2] has been found to be attractive in analog signal processing/signal generation due to the following advantageous features: transmission properties similar to the current feedback op-amp, lack of slew rate limitations as encountered in VOAs, and having two low-impedance inputs and one low-impedance output. In an OTRA, both input terminals are virtually grounded, and the output voltage is the difference between the two input currents multiplied by the transresistance gain Rm, such that. From the viewpoint of analog VLSI implementation, several high-performance CMOS OTRA realizations have been introduced in the current literature for instance, see [1, 6, 7] and the references cited therein. In [4] the present authors introduced new grounded frequency dependent negative resistance (FDNR) and grounded inductance simulation circuits each employing an operational transresistance amplifier (OTRA) alongwith two capacitors, two resistors and a voltage follower.
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