Single VDVTA-Based Voltage-Mode Biquad Filter

Ghanshyam Singh¹, Dinesh Prasad^2*, D. R. Bhaskar²

¹Department of Electronics and Communication Engineering, HMRITM, Hamidpur, Delhi, India.
²Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India.

DOI: 10.4236/cs.2015.63006                

Abstract

In this paper, an application of voltage differencing voltage transconductance amplifier (VDVTA) in the realization of voltage-mode (VM) multi-input single output (MISO) type biquad is presented. The proposed topology uses one VDVTA as an active element, two capacitors and a grounded resistor. The configuration realizes low pass (LP), high pass (HP), band pass (BP) and notch (BR) filters without the requirement of any matching condition. The natural frequency (w₀) and bandwidth (BW) are independently controllable. The proposed circuit offers low active and passive sensitivities of w₀. The operation of the proposed circuit has been verified through SPICE simulation with TSMC CMOS 0.18 μm process parameters.

Keywords

Voltage Differencing Voltage Transconductance Amplifier, Analog Filter, LP, HP, BP, BR, Voltage Mode

Conflicts of Interest

The authors declare no conflicts of interest.

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