Title :
Digitally controlled fully differential voltage- and transadmittance-mode biquadratic filter
Author :
Beg, Parveen ; Maheshwari, Shishir ; Siddiqi, M.A.
Author_Institution :
Dept. of Electron. Eng., Z.H. Coll. of Eng. & Technol., Aligarh, India
Abstract :
This study introduces a digitally controlled biquadratic filter operating in fully differential mode and realising voltage and transadmittance functions simultaneously. The proposed circuit is based on the active element namely, digitally current controlled differential voltage current conveyor and three passive components. The proposed circuit offers wide range and non-interactive digital control over filter parameters and also exhibits wide dynamic range. The fully differential nature is well justified by the high common mode rejection ratio of the proposed circuit. Non-ideal and parasitic analyses are performed and extensive simulations carried out to verify the proposed circuit.
Keywords :
biquadratic filters; digitally controlled fully differential transadmittance-mode biquadratic filter; digitally controlled fully differential voltage-mode biquadratic filter; digitally current controlled differential voltage current conveyor; noninteractive digital control; passive components;
Journal_Title :
Circuits, Devices & Systems, IET
DOI :
10.1049/iet-cds.2012.0244