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Versatile analog squarer and multiplier free from body effect
Author(s)
Chaisayun, Ittipong
Piangprantong, Somkiat
Dejhan, Kobchai
Date Issued
June 1, 2012
Type
Article
Abstract
This paper proposes the analog CMOS squarer and the four-quadrant analog CMOS multiplier. The major advantages of the proposed circuits are low voltage supply, multifunction of output, and insensitive to the threshold voltage variation caused by body effect. The versatile squarer has two inputs (Vin and Iin). Its output can be the square of Vin or the square of Iin. The versatile fourquadrant multiplier has four inputs (VX, IX, VY, and IY). Its output can be the product of VX and VY, the product of IX and IY, the product of VX and IY, or the product of VY and IX. Therefore, the proposed circuits can be applied more than conventional circuits and have good performance. Secondorder effects and frequency response are analyzed. Simulation results have verified the workability of the circuits. Experimental results are done to confirm the operation of the circuits. © Springer Science+Business Media, LLC 2011.
Citation
Analog Integrated Circuits and Signal Processing, 71(3), 539-547, 2012