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Operational Transconductance Amplifiers
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Transconductance - University of Arizona
atlas.physics.arizona.eduOperational transconductance amplifiers An operational transconductance amplifier (OTA) is an integrated circuit which can function as a transconductance amplifier. These normally have an input to allow the transconductance to be controlled. References [1] Blencowe, Merlin (2009). "Designing Tube Amplifiers for Guitar and Bass".
MT-079: Analog Multipliers - Analog Devices
www.analog.comFigure 4: Basic Transconductance Multiplier . This is a rather poor multiplier because (1) the Y input is offset by the VBE which changes non-linearly with VY; (2) the X input is non-linear as a result of the exponential relationship between IC and VBE; and (3) the scale factor varies with temperature. Page 3 of 8