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Four-quadrant CMOS analogue multiplier

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2 Author(s)
Hong, Z. ; Swiss Federal Institute of Technology, Institute of Applied Physics, Zurich, Switzerland ; Melchior, H.

A novel two-signal four-quadrant analogue voltage multiplier has been built in CMOS technology. This multiplier relies on the quadratic current/voltage characteristics of MOS transistors in saturation and combines them with switched-capacitor-type voltage dividers and charge transfer circuits to achieve accurate voltage multiplications with low offsets and large dynamic ranges up to several volts throughout the audio frequency range.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 24 )