New Current-Controlled Current-Mode Multifunction Filter Using Translinear Current Conveyors

A new current-mode universal biquadratic filter with two inputs and two outputs employing only two translinear current conveyors with controlled gain and two grounded capacitors is proposed. The proposed circuit offers the following features: realization of lowpass, bandpass, highpass, bandstop and allpass current responses from the same configuration, no requirements for component-matching conditions, independent current control of the natural frequency and the quality factor, low active and passive sensitivities, minimum active and passive components, high impedance output. The characteristics of the proposed circuit are simulated using PSPICE to confirm the theory.

[1]  Alain Fabre,et al.  Class A/AB second-generation current conveyor with controlled current gain , 1994 .

[2]  Worapong Tangsrirat,et al.  High output impedance current-mode universal filter employing dual-output current-controlled conveyors and grounded capacitors , 2007 .

[3]  Shahram Minaei,et al.  A new CMOS electronically tunable current conveyor and its application to current-mode filters , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[4]  D. R. Frey,et al.  Log-domain filtering: An approach to current-mode fil-tering , 1993 .

[5]  Hakan Kuntman,et al.  Wide Dynamic Range High Output Impedance Current-mode Multifunction Filters with Dual-output Current Conveyors , 2002 .

[6]  Worapong Tangsrirat,et al.  Current-tunable current-mode multifunction filter based on dual-output current-controlled conveyors , 2007 .

[7]  Wanlop Surakampontorn,et al.  CMOS-based electronically tunable current conveyor , 1992 .

[8]  Serdar Ozoguz,et al.  Universal current-mode filter with reduced number of active and passive components , 1997 .

[9]  Chun-Ming Chang,et al.  Universal current filter with single input and three outputs using MOCCIIs , 2007 .

[10]  M. Bhushan,et al.  Grounding of capacitors in integrated circuits , 1967 .

[11]  Chun-Ming Chang.  Universal active current filter with single input and three outputs using CCIIs , 1993 .

[12]  Gordon W. Roberts,et al.  All current-mode frequency selective circuits , 1989 .

[13]  Muhammad Taher Abuelma'atti,et al.  A new current-controlled multiphase sinusoidal oscillator using translinear current conveyors , 1998 .

[14]  Christofer Toumazou,et al.  Extending voltage-mode op amps to current-mode performance , 1990 .

[15]  Ching-Ting Lee,et al.  Versatile insensitive current-mode universal biquad implementation using current conveyors , 2001 .

[16]  Chun-Ming Chang,et al.  Novel versatile insensitive universal current-mode biquad employing two second-generation current conveyors , 2003 .

[17]  Ali Toker,et al.  Insensitive current-mode universal filter using dual output current conveyors , 2000 .

[18]  Alain Fabre,et al.  Current controlled bandpass filter based on translinear conveyors , 1995 .

[19]  Noboru Yabuki,et al.  Versatile current-mode biquadratic circuit using only plus type CCCIIs and grounded capacitors , 2007 .