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Single Fully Differential Second Generation Current Conveyor Based Four-Quadrant Analog Multiplier Design and Its Applications

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Chinese Journal of Electronics 2020年第5期29卷 959-965页

作者： ROY Suvajit PAL Radha-Raman Department of Physics and Technophysics Vidyasagar University

This manuscript presents a new fourquadrant analog multiplier using a recently reported current mode active building block, namely the Fully differential second generation current conveyor(FDCCⅡ).The proposed circuit employs single FDCCⅡ and two NMOSFETs only, thus has simple architecture. It is fully-integrable as no other external passive component has been used. Non-ideal behaviour of the reported configuration has been analysed considering current and voltage tracking errors of the FDCCⅡ. Workability of the derived multiplier is verified with PSPICE(Cadence16.6) simulations using model parameter of TSMC 0.35μm CMOS process and found to be in close agreement with theoretical anticipations. The static power consumption of the circuit is 0.107 mW. The circuit works well with good linearity(nonlinearity error ≤ 0.96%) for the input voltage range of ±0.5 V for a supply voltage of ±1 V and the output is insensitive to temperature variation. Simulation results show that the –3 dB bandwidth of the proposed multiplier is 20.67 MHz and the output referred noise√is less than 9 nV/Hz at 1 kΩ load condition. MonteCarlo analysis has also been performed for the proposed configuration. The applicability of the reported multiplier as amplitude modulator, squarer, and frequency doubler are also demonstrated.

关键词： single fully differential second generation current conveyor low-power electronics current conveyors amplitude modulator bandwidth 20.67 MHz integrated circuit design size 0.35 mum power 0.107 mW Frequency doubler Four-quadrant analog multiplier current voltage tracking errors NMOSFET CMOS analogue integrated circuits four-quadrant analog multiplier design nonideal behaviour SPICE analogue multipliers derived multiplier CMOS process single FDCCII Fully differential second generation current conveyor (FDCCII) Monte Carlo methods current mode active building block Monte-Carlo analysis input voltage range Squarer current-mode circuits

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