Novel CMOS Current Follower Transconductance Amplifier Current-Mode universal Filter

Current Mode Universal Filter Using Single Current Controlled Differential Difference Current Conveyor Transconductance Amplifier

This research paper contains a new electronically tunable current-mode biquadratic universal filter using a new active building block; current controlled differential difference current conveyor transconductance amplifier (CCDDCCTA). The proposed filter provides the following important and desirable features: (i) One can use only one CCDDCCTA and two capacitors; (ii) One can get low pass (LP), ...

Realization of Voltage mode Universal Filter by Using Single Differential Voltage Current Conveyor Transconductance Amplifier

The paper presents a new voltage-mode universal filter using a differential voltage current conveyor transconductance amplifier (DVCCTA). It has three inputs and single output. The proposed circuit can simultaneously realize low-pass, band-pass, and high pass, band reject and all pass filter functions without changing the circuit topology and passive elements. The circuit exhibits a good freque...

Gm-Realization of Controlled-Gain Current Follower Transconductance Amplifier

This paper describes the conception of the current follower transconductance amplifier (CFTA) with electronically and linearly current tunable. The newly modified element is realized based on the use of transconductance cells (G(m)s) as core circuits. The advantage of this element is that the current transfer ratios (i(z)/i(p) and i(x)/i(z)) can be tuned electronically and linearly by adjusting...

Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited

This paper presents a current-mode (CM) second-order filter, employing one so-called “Z Copy – Current Differencing Transconductance Amplifier” (ZC-CDTA), two grounded capacitors, and one virtually grounded resistor. The filter provides two current outputs of low-pass (LP) and band-pass (BP) types for driving independent loads, and one high-pass (HP) current output, flowing through one of the w...

A CMOS current - mode operational amplifier