On the realization of high-order current-mode filter employing current controlled conveyors
Computers and Electrical Engineering
A CMOS digitally programmable filter technique for VLSI applications
Analog Integrated Circuits and Signal Processing
Log-domain synthesis of nth order universal filter
Analog Integrated Circuits and Signal Processing
Higher-order immittance functions using current conveyors
Analog Integrated Circuits and Signal Processing
A novel ±0.5 V, high current drive, and rail to rail current operational amplifier
Analog Integrated Circuits and Signal Processing
A class of digitally programmable nth-order filters
International Journal of Circuit Theory and Applications
Analog Integrated Circuits and Signal Processing
A high CMRR, class AB, fully differential current output stage
Analog Integrated Circuits and Signal Processing
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New high-order current-mode (CM) filter topologies capable of providing all functions simultaneously are presented. The proposed filters are based on digitally controlled current amplifiers and unity gain voltage buffers. The gains of the current amplifiers are digitally programmed to adjust the filters' transfer function coefficients. It is shown that the proposed approach results in more efficient realizations compared with its counterparts based on other CM active elements. Using BSIM3 0.18 μm CMOS models, simulation results of a fourth-order universal filter are provided.