A simple and low cost square-rooting circuit employing commercial devices

Chaisayun, Ittipong

doi:10.1109/ieecon.2017.8075901

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Using only CCCIIs, another current-mode squarer and square-rooter were proposed in [6], but 2 and 3 CCCIIs were needed for the square-rooter and the squarer circuit, respectively. The OP-AMP based square-rooting circuits informed in [7][8][9][10] have the disadvantages that they use excessive passive components and operate in voltage-mode. Also, the circuits of [7][8][9] employ multiple OP-AMPs.…”

Section: Introductionmentioning

confidence: 99%

“…The OP-AMP based square-rooting circuits informed in [7][8][9][10] have the disadvantages that they use excessive passive components and operate in voltage-mode. Also, the circuits of [7][8][9] employ multiple OP-AMPs. Again, the squaring and square-rooting circuits introduced in [11] employing an OP-AMP and 2/4 MOSFETs are of voltage-modes.…”

Section: Introductionmentioning

confidence: 99%

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Simple Current-Mode Squaring and Square-Rooting Circuits: Applications of MO-CCCCTA

2021

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This work provides new designs of simple current-mode squaring and square-rooting circuits using multiple-output current controlled current conveyor transconductance amplifier (MO-CCCCTA) as an active building block. Since the proposed circuits need no other external components, they are capable of high-frequency operation and well fitted for IC fabrication. Furthermore, they are insensitive to ambient temperature and their gains can be controlled easily by adjusting the bias currents of MO-CCCCTA. Additionally, the effects of MO-CCCCTA non-idealities on the designed circuits have also been investigated and discussed. Simulation results generated through PSPICE software using TSMC 0.18 µm CMOS process parameters have been presented to justify the theoretical analysis. The static power consumption, bandwidth, and maximum linearity error in dc transfer characteristic measurement for the square-rooting circuit are found to be 0.17 mW, 445.63 MHz and 1.12 %, while for the squaring circuit they are 0.326 mW, 61.15 MHz and 2.38 %, respectively. The application of the reported circuits as a 2-input vector summation circuit has also been included to strengthen the design ideas. HIGHLIGHTS Simple structures of fully integrable current-mode squarers and square-rooters with low component count and lower power dissipation The circuits are insensitive to temperature drift and their gains can be controlled easily by adjusting the bias currents of MO-CCCCTA Bandwidth, static power dissipation, linearity error of square-rooter are 445.63 MHz, 0.17 mW & ≤ 1.12 %; and for the squarer 61.15 MHz, 0.326 mW & 2.38 %, respectively GRAPHICAL ABSTRACT

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