Title :
A CMOS Digitally Programmable Universal Current-Mode Filter
Author :
Alzaher, Hussain A.
Author_Institution :
Electr. Eng. Dept., King Fahd Univ. of Pet. & Miner., Dhahran
Abstract :
A new digitally programmable universal current-mode biquad filter is proposed. The filter is based on digitally controlled current followers (DCCFs). It utilizes gains of the DCCFs to provide precise frequency and/or gain characteristics that can be digitally tuned over a wide range. All parameters of the proposed filter can be adjusted independently. Experimental results obtained from a 0.35-mum standard CMOS chip are provided.
Keywords :
CMOS integrated circuits; biquadratic filters; current-mode circuits; CMOS; biquad filter; digitally controlled current follower; digitally programmable universal current-mode filter; size 0.35 micron; Application specific integrated circuits; Bandwidth; Circuit optimization; Degradation; Digital control; Digital filters; Frequency; Linearity; Petroleum; Tuning; CMOS analog integrated circuits; current-mode (CM) filters;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2008.921599
