Linearly Tunable CMOS Voltage Differencing Transconductance Amplifier (VDTA)

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dc.contributor.authorTangsrirat, Worapong
dc.date.accessioned2026-08-06T10:24:42Z
dc.date.available2026-08-06T10:24:42Z
dc.date.issued2019-06-01
dc.description.abstractThis paper proposes an alternative way to implement a linearly tunable CMOS voltage differencing transconductance amplifier (VDTA). It has been designed by using the floating current source (FCS) and the current squaring circuit. The circuit achieves its linear tunability by squaring the long-tail biasing current of the FCS. In this way, the transconductance gains of the proposed CMOS VDTA can be varied linearly through adjusting the DC bias currents. As an application example, the proposed VDTA is used in the design of an actively tunable voltage-mode multifunction filter. The derived filter possesses the following desirable properties: simultaneous realization of three standard filter functions; employment of only two grounded capacitors; and electronic tunability of the natural angular frequency and the quality factor. The performance of the proposed circuit and its filter design application were examined by PSPICE simulations with TSMC 0.25-mm CMOS real process technology.
dc.identifier.citationInformacije MIDEM, 49(2), 61-68, 2019
dc.identifier.doi10.33180/InfMIDEM2019.202
dc.identifier.issn03529045
dc.identifier.other2-s2.0-85130481059
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/9890
dc.sourceInformacije MIDEM
dc.subjectCurrent Squarer
dc.subjectElectronically tunable
dc.subjectLow-voltage circuits
dc.subjectMOS analog circuits
dc.subjectVoltage Differencing Transconductance Amplifier (VDTA)
dc.titleLinearly Tunable CMOS Voltage Differencing Transconductance Amplifier (VDTA)
dc.typeArticle

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