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access icon openaccess New grounded immittance simulators employing a single CFCC

  • Author(s): Alok Kumar Singh 1 ; Pragati Kumar 2 ; Raj Senani 3
    • View affiliations
  • Source: Volume 2017, Issue 8, August 2017, p. 435 – 447
    DOI:  10.1049/joe.2017.0131 , Online ISSN 2051-3305
This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 05/04/2017, Accepted 07/04/2017, Published 28/04/2017

In this study, a number of new immittance simulators employing a single current follower current conveyor (CFCC) and three passive components are proposed. First, six new circuit configurations have been introduced which can simulate lossy immittances of different types using a single CFCC along with a canonical number of passive and active components. Subsequently, with a little modification in the hardware of the CFCC, three other new circuits have been introduced which can simulate a variety of lossless immittances without any component matching constraints or requirement of additional active elements. When the passive resistors are replaced with complementary metal–oxide–semiconductor (CMOS) voltage controlled resistors, electronic tunability of the simulated immittances is available in all the cases. Several application examples of some of the proposed simulated immittance circuits have been presented and their workability has been verified using PSPICE simulations based on CFCC implementable in 0.18 μm CMOS technology.

Inspec keywords: resistors; CMOS integrated circuits; current conveyors

Other keywords: CMOS technology; CMOS voltage-controlled resistors; electronic tunability; simulated immittance circuits; single-current follower current conveyor; size 0.18 mum; passive resistors; PSPICE simulations; canonical number; grounded immittance simulators; complementary metal-oxide-semiconductor; passive component; active component; CFCC

Subjects: CMOS integrated circuits; Resistors; Active filters and other active networks

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