TITLE:
Multifunction Filter Employing Current Differencing Buffered Amplifier
AUTHORS:
Tajinder Singh Arora, Udit Rana
KEYWORDS:
Active Filters, Current Differencing Buffered Amplifier, Biquadratic Filter, KHN-Biquad
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.5,
April
29,
2016
ABSTRACT: This paper proposes a new
filter biquad circuit, which utilizes three Current Differencing Buffered
Amplifiers (CDBA), two capacitors and five resistors, and operates in the
trans-resistance mode. This multi-input and single-output multifunction filter
uses only grounded capacitors. All the employed resistors are either grounded
or virtually grounded, which is an important parameter for its implementation
as an integrated circuit. The circuit enjoys independent tunability of angular
frequency and bandwidth. The 0.5 μm technology process parameters have been
utilized to test and verify the performance characteristics of the circuit
using PSPICE. The non-ideal analysis and sensitivity analysis, transient
response, Monte-Carlo analysis and calculations of total harmonic distortion
have also been shown.