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Voltage Difference Transconductance Amplifier based Voltage Mode Band Pass Filter with constant Q-Factor | IEEE Conference Publication | IEEE Xplore

Voltage Difference Transconductance Amplifier based Voltage Mode Band Pass Filter with constant Q-Factor


Abstract:

This paper, realizes a new band pass filter (BPF) circuit based on two Voltage Differencing Transconductance Amplifiers (VDTAs). The devised circuit uses two capacitors w...Show More

Abstract:

This paper, realizes a new band pass filter (BPF) circuit based on two Voltage Differencing Transconductance Amplifiers (VDTAs). The devised circuit uses two capacitors without using a resistor. It makes an easy way for the fabrication of ICs in VLSI design. It operates in voltage-mode. The proposed circuit is enforced in a gpdk 180 nm CMOS process using a Cadence Virtuoso tool. Moreover, the proposed Band Pass Filter circuit operated at low voltage i.e., ±0.9 V, avails bias current of 150 μA and dissipates 0.54 mW power. The transconductance value of this element is electronically tunable/controllable with the bias currents.
Date of Conference: 28-30 June 2018
Date Added to IEEE Xplore: 04 April 2019
ISBN Information:
Conference Location: Iasi, Romania

I. Introduction

Various active devices were introduced by D. Biolek [1] into the analogue domain and Voltage Difference Transconductance Amplifier (VDTA) is one among them. The active element, VDTA has the resiliency that it can use in either voltage-mode or current-mode. The VDTA element is constructed as the difference of input voltages controlled by the current source and has a multi-output transconductance amplifier. Thus, the VDTA element has the voltage-difference unit succeeded by the dual output transconductance amplifier. The VDTA block is simply realized without the use of resistor since it avails two different values of and also the transconductance value is electronically controllable/tunable by changing bias currents. Because of this feature, VDTA element is more advantageous when related to other active devices. The terminals of VDTA element exhibit higher impedance value. Further, it was perceived that VDTA is most useful and has various applications such as oscillators, waveform generators, biquad filters and so on [2]–[9]. Some of the available current-mode devices are Current Conveyor (CC) [10]–[13], Operational Transconductance Amplifier (OTA) [14], Operational Trans-Resistance Amplifier (OTRA) [15], [16], Differential Difference Current Conveyor Transconductance Amplifier (DDCCTA) [17], [18], Current Differencing Transconductance Amplifier (CDTA) [19], [20] and so on.

References

References is not available for this document.