Single-Ended Output Class-AB Current Multiplier

Boonchai Boonchu
Mahanakorn Institute of Inovation, Faculty of Engineering,
Mahanakorn University of Technology,
Nong-chock, Bangkok, Thailand
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Wanlop Surakampontorn
Collage of Advanced Manufacturing Innovation,
King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand.
Associate Fellow of the Academy of Science, The Royal Society of Thailand.
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Manuscript received November 11, 2019
Revised December 9, 2019



ABSTRACT
A new current-mode single-ended output four-quadrant analogue multiplier, for analogue signal processing applications, is proposed. The multiplier is designed by based on the use of the class-AB amplifier and the dual output second generation current conveyor. The multiplier performance is demonstrated through PSPICE circuit simulation using 0.25-µm CMOS technology with ±1.5 V power supply voltages. The total harmonic distortion of about 1% for the input signal range of ±10 µA is achieved. The quiescent power consumption is 342 µW and the -3dB bandwidth of the proposed multiplier circuit is 5.8 MHz.

Keywords: analogue multiplier, current-mode circuit, class-AB amplifier, CMOS square-law circuit, single-ended output multiplier, current conveyor.

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