TITLE:
Tunable Bandwidth Third Order Switched-Capacitor with Multiple Feedbacks Filter for Different Center Frequencies
AUTHORS:
Ganeshchandra N. Shinde, Sanjay R. Bhagat
KEYWORDS:
Third Order Filter, Switched Capacitor, Pass Band Gain, Tunable Bandwidth, Circuit Merit Fac-tor
JOURNAL NAME:
Engineering,
Vol.2 No.3,
April
13,
2010
ABSTRACT: This paper proposes third order tunable bandwidth active Switched-Capacitor filter. The circuit consists of only op-amps and switched capacitors. The circuit is designed for circuit merit factor Q = 10. The proposed circuit implements three filter functions low pass, band pass and high pass simultaneously in single circuit. The filter circuit can be used for both narrow as well as for wide bandwidth. For various values of cut-off frequencies the behaviour of circuit is studied. The circuit works properly only for higher central frequencies, when f0 > 10 kHz.