A Class of Differentiator-Based Multifunction Biquad Filters Using OTRAs
Neeta Pandey, Rajeshwari Pandey, Rashika Anurag, Ritu Vijay
DOI: 10.15598/aeee.v18i1.3363
Abstract
This paper presents Signal Flow Graph (SFG) approach-based realization of Single Input Multiple Output (SIMO) filter topologies. A differentiator is placed as basic building block. A total of sixteen variants are derived from the proposed differentiator-based SFG. The Operational Trans-Resistance Amplifier (OTRA), an active block having low parasitics at input terminals, is used to validate the proposed methodology. All the derived filter structures use three OTRAs, six resistors and two capacitors. The filter performance parameters can be adjusted independently. The functional verification of the proposed method is done via SPICE simulations using 0.18 μm CMOS technology parameters from MOSIS.